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解方程专项练习- - - 1 解一元一次一元一次方程专项练习题(200题,有答案) (1 )x = , (2 ) x = , (3 )4 x = , (4 )8 2 . 5 2 x = 1 3 . 6 (5 )0 . 7 8 :x = 3 :5 , (6 )1 2 0 %x = 0 . 4 , (8 ) 1 (x )= 6 , (9 )2 x x = 1 . 2 , (1 0 )9 3 1 . 7 x = 1 3 . 4 , (1 1 )x 2 5 %x = 2 4 , (1 2 ) x + 0 . 2 = , (1 3 )0 . 6 x + 9 0 %x = 7 8 , (1 4 )2 0 %x 2 . 4 3 = 0 . 8 , (1 5 ) x x = 4 2 , (1 6 )0 . 6 x + 3 2 . 5 = 6 7 . 5 , (1 7 )1 (x 0 . 4 5 )= 5 , (1 8 )x 2 . 2 5 = 8 . 2 5 , (1 9 ) :x = 3 :1 2 , (2 0 ) x + 0 . 8 = 5 . 6 , 解方程专项练习- - - - 2 (2 1 ) 1 . 4 :x = 1 :0 . 7 5 , ( 2 2 ) x (2 )= 2 4 , ( 2 3 ) 4 x = 3 , (2 4 )1 2 x + 7 0 . 3 = 2 0 . 1 , (2 5 ) x + x = , (2 6 )x :4 2 =, (2 7 ) 0 . 5 + x =, (2 8 )0 . 8 := 0 . 4 8 :x , (2 9 ) = , (3 0 )4 2 : = : (3 1 )5 x 0 . 4 = 7 5 %, ( 3 2 ) 6 x 0 . 9 = 4 . 5 , ( 3 3 )2 (x 3 )= 5 . 8 , (3 4 ) 1 . 6 x = 6 . 4 , ( 3 5 ) 4 x 3 9 = 2 9 , ( 3 6 )1 6 + 8 x = 4 0 , (3 7 ) x 1 . 1 = 3 , (3 8 ) + 2 x = , (3 9 ) 3 7 x = 1 . 0 4 , (4 0 ) x 1 x = 2 , (4 1 )x x = 1 4 , (4 2 )3 x x =, 解方程专项练习- - - - 3 (4 3 )=, (4 4 )1 . 2 : = , (4 5 )=:, (4 6 ): = x :0 . 8 , (4 7 )x= + 1 , (4 8 )1 2 5 %X + 2 5 %x = + 2 5 %x , (4 9 ) =, (5 0 ) X =, (5 1 ) 5 :8 = x :3 2 , (5 2 )2 x + 3 0 . 9 = 2 4 . 9 , (5 3 )5 . 3 x 2 . 9 x = , (5 4 ) (7 2 . 8 x )= 1 . 5 , (5 5 )x :0 . 3 = : , (5 6 ) 1 5 0 %x + 6 6 = 9 9 (5 7 )x + 6 0 . 8 x = 1 6 (5 8 ) (5 9 ) (6 0 )3 (X )= 1 . 3 (6 1 ) (X + 0 . 5 ) :2 = (X 4 ) : , (6 2 ) X 0 . 0 5 = 3 . 5 2 8 , (6 3 )2 X 4 6 = 8 0 , (6 4 )4 4 . 5 3 X = 6 . 3 8 , 解方程专项练习- - - - 4 (6 5 )4 X 7 . 2 = 1 0 , (6 6 )1 1 . 5 X + X = 2 0 , (6 7 )3 . 8 1 2 + 1 5 X = 8 7 . 6 , (6 8 )6 X + 5 = 1 7 , (6 9 )0 . 6 (2 . 5 + X )= 4 . 2 , (7 0 ) : = X :, (7 1 ), (7 2 ) (7 3 ), (7 4 )4 ( + x )=, (7 5 ) 0 . 2 5 + x = , (7 6 )x , (7 7 )2 0 0 :6 = x :, (7 8 )4 X = , (7 9 )8 (x 2 )= 2 (x + 7 ) , (8 0 ):1 8 %=, (8 1 ) 2 x = , (8 2 ) x + x = 4 6 , (8 3 ) :x = : , (8 4 )=, 解方程专项练习- - - - 5 (8 5 )5 (3 x 4 )2 (x 1 )= 5 (2 x 1 ) (8 6 )= , (8 7 )8 (2 X 7 )= 5 (X + 1 3 ) , (8 8 )3 (x + 4 . 5 )= 6 0 , (8 9 )1 . 6 x + 2 . 4 = 7 . 5 2 , (9 0 )3 (x 0 . 8 )= 6 . 3 , (9 1 )2 8 . 4 5 x = 5 . 8 , (9 2 ) x : = (9 3 ) + 2 x = , (9 4 )x = 1 5 %, (9 5 ) x x =, (9 6 )x + 5 0 %x = 6 , (9 7 ) :x = 0 . 3 :1 2 , (9 8 )4 x + 2 (8 x )= 2 6 , (9 9 ) x = 0 , (1 0 0 ) + x = 1 , (1 0 1 )x ( + )=, (1 0 2 ), (1 0 3 ), (1 0 4 )x , (1 0 5 )x , (1 0 6 )5 x + 3 5 = 6 5 0 , 解方程专项练习- - - - 6 (1 0 7 )7 2 0 3 x = 8 0 , (1 0 8 )3 . 6 x 0 . 9 x = 8 . 1 , (1 0 9 )4 4 . 5 3 x = 6 , (1 1 0 )=, (1 1 1 )6 3 1 . 8 X = 7 . 2 , (1 1 2 ) x = , (1 1 3 )x = 4 2 , (1 1 4 ) x + =, (1 1 5 )7 x 3 = 8 . 1 9 , (1 1 6 )1 2 :0 . 6 = x : , (1 1 7 )3 (x + 2 )= 4 (x + 1 ) , ( 1 1 8 ) 3 x 7 0 %x = 9 . 2 , ( 1 1 9 ) 6 + x = 2 4 0 , (1 2 0 )2 2 . 5 0 . 4 x = 1 2 . 5 , (1 2 1 )x :3 . 5 = 4 :2 , (1 2 2 )x 0 . 8 x 6 = 1 6 , (1 2 3 ) : = x :8 , (1 2 4 ), (1 2 5 )x :1 5 = : , (1 2 6 ) x + x =, (1 2 7 )x 5 0 % x = 5 , 解方程专项练习- - - - 7 (1 2 8 )1 x = , (1 2 9 )2 . 5 + 1 x = 3 , (1 3 0 )3 x 2 = 4 , (1 3 1 )8 . 5 3 x = 2 , (1 3 2 )3 x = 4 , (1 3 3 ) x 5 %= 1 7 . 5 4 , (1 3 4 ) : = : (4 x ) , ( 1 3 5 ) 6 x + 3 1 = 4 9 , ( 1 3 6 ) 7 x 3 = 8 . 1 9 , ( 1 3 7 ) 3 2 . 8 9 x = 1 7 . 5 , ( 1 3 8 ) x 0 . 3 6 x = 1 6 , ( 1 3 9 ) 6 7 + 3 x = 6 9 , ( 1 4 0 ) 6 x + 2 x 5 6 = 0 , ( 1 4 1 ) 3 x 0 . 4 5 4 = 2 . 7 , ( 1 4 2 ) 5 . 8 x 4 . 6 x = 0 . 9 6 , ( 1 4 3 ) 8 . 4 (9 x )= 3 , ( 1 4 4 ) 3 x 1 . 2 = 8 , (1 4 5 )5 x + 2 8 = 7 1 , (1 4 6 )8 . 7 1 . 2 x = 3 . 9 , (1 4 7 )8 x 2 . 6 x = 3 7 . 8 , (1 4 8 )0 . 7 5 x 0 . 9 5 4 = 8 . 5 , (1 4 9 )5 4 2 + 3 x = 7 2 , 解方程专项练习- - - - 8 (1 5 0 )8 x 2 . 6 = 3 7 . 8 , (1 5 1 ) x =, (1 5 2 )x + 3 0 %x = 2 6 , (1 5 3 ) 7 . 8 3 x = 3 . 6 , (1 5 4 )6 3 1 . 8 x = 7 . 2 , (1 5 5 )1 0 :x = 4 . 5 :0 . 8 , (1 5 6 ) : = x :, (1 5 7 )X 7 . 6 5 = 4 . 6 4 , (1 5 8 )2 8 . 2 5 X = 8 . 2 5 , (1 5 9 )X (3 . 6 + 2 . 9 7 )= 1 2 . 4 2 , (1 6 0 ) x = , (1 6 1 )1 4 . 5 = 5 . 5 , (1 6 2 )x 8 0 %x = 4 8 , (1 6 3 )7 5 %x 5 = 6 , (1 6 4 )x 6 . 8 = 1 5 . 4 , (1 6 5 )1 . 9 x = 5 . 7 , (1 6 6 )4 . 3 y y = 4 . 6 , (1 6 7 )5 x + 2 . 6 = 7 . 6 , ( 1 6 8 ) x 1 . 5 = 1 2 . 9 , ( 1 6 9 ) 9 x + 5 x = 8 . 4 , ( 1 7 0 ) 6 . 8 + 3 . 2 x = 1 4 . 8 , (1 7 1 )5 x =, (1 7 2 ) x = , (1 7 3 )4 . 5 3 x = 1 . 5 , 解方程专项练习- - - - 9 (1 7 4 ) (1 + 2 5 %)x = 0 . 5 , (1 7 5 )x 4 0 %x = 9 , (1 7 6 )x 2 0 %= 1 5 . 2 , (1 7 8 ) x x =, (1 7 9 ) x 7 5 %= 3 , (1 8 0 )4 x , (1 8 1 ) :x = :4 . 5 , (1 8 2 ) (x 4 . 5 ) 6 = 1 2 . 5 , (1 8 3 )2 7 1 7 x = 1 3 . 4 , (1 8 4 )9 . 6 + 3 x = 3 . 2 4 5 , (1 8 5 )2 x + 5 = 5 x 7 , ( 1 8 6 ) 3 (x 2 )= 2 5 (x 2 ) , (1 8 7 )4 x 3 (2 0 x )+ 4 = 0 , (1 8 8 )= 1 , (1 8 9 )4 x 5 6 = 1 2 , (1 9 0 )8 x 3 x = 1 5 . 6 , (1 9 1 )3 0 (x 4 )= 6 0 , (1 9 2 )7 . 2 0 . 5 3 x = 1 . 2 , (1 9 3 )5 x 2 . 4 5 = 8 , (1 9 4 ) + x = 2 , (1 9 5 )5 x + 2 . 4 1 5 = 6 6 , (1 9 6 )3 . 2 x + 2 . 8 x - x = 1 , 解方程专项练习- - - - 1 0 (1 9 7 )2 . 5 1 6 - 8 x = 1 2 , (1 9 8 )9 . 6 - 3 x = 6 . 3 , (1 9 9 )5 (x + 6 )= 7 5 , (2 0 0 )x 0 . 7 + 0 . 9 3 = 4 , 解方程专项练习- - - - 1 1 答案: (1 )x = , = , , x = ; (2 ) x = , x = , x 2 1 = 2 1 , x = 1 2 ; (3 )4 x = , 4 x + 4 x = + 4 x , = + 4 x, 4 = 4 x 4 , x = (4 )8 2 . 5 2 x = 1 3 . 6 2 0 2 x = 1 3 . 6 , 1 3 . 6 + 2 X = 2 0 , 2 X = 6 . 4 , x = 3 . 2 ; (5 )0 . 7 8 :x = 3 :5 , 3 x = 0 . 7 8 5 , 3 x = 3 . 9 , x = 1 . 3 (6 )1 2 0 %x = 0 . 4 , 1 2 0 %x + 2 0 %x = 0 . 4 + 2 0 %x , 0 . 4 + 2 0 %x = 1 , 0 . 4 + 2 0 %x 0 . 4 = 1 0 . 4 , 2 0 %x = 0 . 6 , 2 0 %x = 0 . 6 , x = 3 ; (8 )1 (x )= 6 , 1 (x ) (x )= 6 (x ) , 1 = 6 (x ) , 6 x 6 = 1 , 6 x 3 = 1 , 6 x = 4 , 6 x 6 = 4 6 , x = (9 )2 x x = 1 . 2 , x (2 )= 1 . 2 , x = 1 . 2 , x = 1 . 2 , x = 1 ; (1 0 )9 3 1 . 7 x = 1 3 . 4 , 2 7 1 . 7 x = 1 3 . 4 , 2 7 1 . 7 x + 1 . 7 x = 1 3 . 4 + 1 . 7 x , 1 3 . 4 + 1 . 7 x = 2 7 , 1 3 . 4 + 1 . 7 x 1 3 . 4 = 2 7 1 3 . 4 , 1 . 7 x = 1 3 . 6 , 1 . 7 x 1 . 7 = 1 3 . 6 1 . 7 , x = 8 (1 1 )x 2 5 %x = 2 4 , 7 5 %x = 2 4 , 7 5 %x 7 5 %= 2 4 7 5 %, x = 3 2 ; (1 2 ) x + 0 . 2 = , x 0 . 6 = , x 0 . 6 + 0 . 6 = + 0 . 6 , x =, x = , x = 1 解方程专项练习- - - - 1 2 (1 3 )0 . 6 x + 9 0 %x = 7 8 , 1 . 5 x = 7 8 , 1 . 5 x 1 . 5 = 7 8 1 . 5 , x = 5 2 ; (1 4 )2 0 %x 2 . 4 3 = 0 . 8 , 2 0 %x 7 . 2 = 0 . 8 , 2 0 %x 7 . 2 + 7 . 2 = 0 . 8 + 7 . 2 , 2 0 %x 2 0 %= 8 2 0 %, x = 4 0 ; (1 5 ) x x = 4 2 , x = 4 2 , x = 4 2 , x = 2 5 2 (1 6 )0 . 6 x + 3 2 . 5 = 6 7 . 5 , 0 . 6 x + 7 . 5 = 6 7 . 5 , 0 . 6 x + 7 . 5 7 . 5 = 6 7 . 5 7 . 5 , 0 . 6 x = 6 0 , 0 . 6 x 0 . 6 = 6 0 0 . 6 , x = 1 0 0 ; (1 7 )1 (x 0 . 4 5 )= 5 , (x 0 . 4 5 ) (x 0 . 4 5 )=(x 0 . 4 5 ) , x 2 . 4 = 1 . 6 , x 2 . 4 + 2 . 4 = 1 . 6 + 2 . 4 , x = 4 , x = 4 , x = (1 8 )x 2 . 2 5 = 8 . 2 5 , x 2 . 2 5 + 2 . 2 5 = 8 . 2 5 + 2 . 2 5 , x = 1 0 . 5 ; (1 9 ) :x = 3 :1 2 , 3 x = 1 2 , 3 x 3 = 9 3 , x = 3 (2 0 ) x + 0 . 8 = 5 . 6 , x + 0 . 8 0 . 8 = 5 . 6 0 . 8 , x = 4 . 8 , x = 4 . 8 , x = 8 (2 1 ) 1 . 4 :x = 1 :0 . 7 5 , x = 1 . 4 0 . 7 5 , x = 1 . 0 5 ( 2 2 ) x (2 )= 2 4 , x = 2 4 , x = 2 4 , x = 2 0 ; ( 2 3 ) 4 x = 3 , 4 x + = 3 + , 4 x = 4 , 4 x 4 = 4 4 , x = 1 (2 4 )1 2 x + 7 0 . 3 = 2 0 . 1 , 1 2 x + 2 . 1 = 2 0 . 1 , 1 2 x + 2 . 1 2 . 1 = 2 0 . 1 2 . 1 , 1 2 x 1 2 = 1 8 1 2 , x = 1 . 5 ; (2 5 ) x + x = , x = , x , x = ; (2 6 )x :4 2 =, 1 0 x = 4 2 , 1 0 x 1 0 = 3 0 1 0 , x = 3 解方程专项练习- - - - 1 3 (2 7 ) 0 . 5 + x =, 0 . 7 5 + x = 3 . 7 5 , 0 . 7 5 + x 0 . 7 5 = 3 . 7 5 0 . 7 5 , x = 3 , x = 3 , x = 6 ; (2 8 )0 . 8 := 0 . 4 8 :x , 0 . 8 x = 0 . 4 8 , 0 . 8 x = 0 . 2 , 0 . 8 x 0 . 8 = 0 . 2 0 . 8 , x = (2 9 ) = , x = , x=, x = 3 ; (3 0 )4 2 : = : x = 4 2 , x= 3 0, x = 5 0 ; (3 1 )5 x 0 . 4 = 7 5 %, 5 x 0 . 4 + 0 . 4 = 7 5 %+ 0 . 4 , 5 x 5 = 1 . 1 5 5 , x = 0 . 2 3 ( 3 2 ) 6 x 0 . 9 = 4 . 5 , 6 x 0 . 9 + 0 . 9 = 4 . 5 + 0 . 9 , 6 x = 5 . 4 , 6 x 6 = 5 . 4 6 , x = 0 . 9 ; ( 3 3 )2 (x 3 )= 5 . 8 , 2 (x 3 ) 2 = 5 . 8 2 x 3 = 2 . 9 , x 3 + 3 = 2 . 9 + 3 , x = 5 . 9 ; (3 4 ) 1 . 6 x = 6 . 4 , 1 . 6 x 1 . 6 = 6 . 4 1 . 6 , x = 4 ; ( 3 5 ) 4 x 3 9 = 2 9 , 4 x 2 7 = 2 9 , 4 x 2 7 + 2 7 = 2 9 + 2 7 , 4 x = 5 6 , 4 x 4 = 5 6 4 , x = 1 4 ; ( 3 6 )1 6 + 8 x = 4 0 , 1 6 + 8 x 1 6 = 4 0 1 6 , 8 x = 2 4 , 8 x 8 = 2 4 8 , x = 3 ; (3 7 ) x 1 . 1 = 3 , x 1 . 1 1 . 1 = 3 1 . 1 , x = 3 . 3 (3 8 ) + 2 x = , + 2 x=, 2 x = , 2 x 2 = 2 , x = ; (3 9 ) 3 7 x = 1 . 0 4 , 2 . 1 6 7 x = 1 . 0 4 , 2 . 1 6 7 x 1 . 0 4 = 1 . 0 4 1 . 0 4 , 1 . 1 2 7 x = 0 , 7 x 7 = 1 . 1 2 7 , x = 0 . 1 6 ; (4 0 ) x 1 x = 2 , x 1 = 2 , x 1 + 1 = 2 + 1 , x = 3 , 解方程专项练习- - - - 1 4 x= 3, x = 1 8 ; (4 1 )x x = 1 4 , x = 1 4 , x= 1 4, x = 1 8 ; (4 2 )3 x x =, x =, x=, x =; (4 3 )=, 2 . 4 x = 7 2 0 . 2 6 , 2 . 4 x = 1 8 . 7 2 , 2 . 4 x 2 . 4 = 1 8 . 7 2 2 . 4 , x = 7 . 8 ; (4 4 )1 . 2 : = , x = 1 . 2 5 , x = 6 , x= 6, x = 9 ; (4 5 )=:, x = 1 8 , x =, x=, x = 1 2 ; (4 6 ): = x :0 . 8 , x = 0 . 8 , x= 0 . 0 4, x = 0 . 2 ; (4 7 )x= + 1 , x = , x = 1 (4 8 ) 1 2 5 %X + 2 5 %x = + 2 5 %x , 0 . 2 5 x + 0 . 2 5 0 . 2 5 = 1 0 . 2 5 , 0 . 2 5 x = 0 . 7 5 , x = 3 ; (4 9 ) =, 0 . 2 5 x = 1 . 2 5 1 . 6 , 0 . 2 5 x 0 . 2 5 = 1 . 2 5 1 . 6 0 . 2 5 , x = 8 ; (5 0 ) X =, X =, x = ; (5 1 ) 5 :8 = x :3 2 , 8 x = 5 3 2 , 8 x 8 = 5 3 2 8 , x = 2 0 (5 2 )2 x + 3 0 . 9 = 2 4 . 9 , 2 x + 2 . 7 = 2 4 . 9 , 2 x + 2 . 7 2 . 7 = 2 4 . 9 2 . 7 , 2 x 2 = 2 2 . 2 2 , x = 1 1 . 1 ; (5 3 )5 . 3 x 2 . 9 x = , 2 . 4 x = , 2 . 4 x 2 . 4 = 2 . 4 , x = ; (5 4 ) (7 2 . 8 x )= 1 . 5 , (7 2 . 8 x )= 1 . 5, 7 2 . 8 x = 2 . 1 , 7 2 . 8 x + 2 . 8 x = 2 . 1 + 2 . 8 x , 7 2 . 1 = 2 . 1 + 2 . 8 x 2 . 1 , 4 . 9 2 . 8 = 2 . 8 x 2 . 8 , x = 1 . 7 5 ; 解方程专项练习- - - - 1 5 (5 5 )x :0 . 3 = : , x = 0 . 3 , x=, x = (5 6 ) 1 5 0 %x + 6 6 = 9 9 1 . 5 x + 6 6 = 9 9 1 . 5 x = 3 3 x = 2 2 (5 7 )x + 6 0 . 8 x = 1 6 0 . 2 x + 6 = 1 6 0 . 2 x = 1 0 x = 5 0 (5 8 ) x = 1 4 . 4 (5 9 ) 0 . 5 5 x = 5 . 5 x = 1 0 (6 0 )3 (X )= 1 . 3 3 (X ) (x )= 1 . 3 (x ) , 3= 1 . 3 x 0 . 7 8 , 3+ 0 . 7 8 = 1 . 3 x 0 . 7 8 + 0 . 7 8 , 4 . 6 8 = 1 . 3 x , 4 . 6 8 1 . 3 = 1 . 3 x 1 . 3 , x = 3 . 6 ; (6 1 ) (X + 0 . 5 ) :2 = (X 4 ) : , (x 4 )= (x + 0 . 5 ) , x 4 = x + 0 . 5 , x 1 0 x = x +x , 2 . 2 5 x 1 0 + 1 0 = 0 . 1 2 5 + 1 0 , 2 . 2 5 x 2 . 2 5 = 1 0 . 1 2 5 2 . 2 5 , x = 4 . 5 (6 2 ) X 0 . 0 5 = 3 . 5 2 8 , X 0 . 0 5 0 . 0 5 = 3 . 5 2 8 0 . 0 5 , X = 0 . 1 7 6 4 ; (6 3 )2 X 4 6 = 8 0 , 2 X 2 4 = 8 0 , 2 X 2 4 + 2 4 = 8 0 + 2 4 , 2 X = 1 0 4 , 2 X 2 = 1 0 4 2 , X = 5 2 ; (6 4 )4 4 . 5 3 X = 6 . 3 8 , 1 8 3 X = 6 . 3 8 , 1 8 3 X + 3 X = 6 . 3 8 + 3 X , 6 . 3 8 + 3 X = 1 8 , 6 . 3 8 + 3 X 6 . 3 8 = 1 8 6 . 3 8 , 3 X = 1 1 . 6 2 , 3 X 3 = 1 1 . 6 2 3 , X =; (6 5 )4 X 7 . 2 = 1 0 , 4 X 7 . 2 + 7 . 2 = 1 0 + 7 . 2 , 4 X = 1 7 . 2 , 4 X 4 = 1 7 . 2 4 , X = 4 . 3 ; (6 6 )1 1 . 5 X + X = 2 0 , 1 2 . 5 X = 2 0 , 1 2 . 5 X 1 2 . 5 = 2 0 1 2 . 5 , X = 1 . 6 ; (6 7 )3 . 8 1 2 + 1 5 X = 8 7 . 6 , 4 5 . 6 + 1 5 X = 8 7 . 6 , 4 5 . 6 + 1 5 X 4 5 . 6 = 8 7 . 6 4 5 . 6 , 1 5 X = 4 2 , 1 5 X 1 5 = 4 2 1 5 , X = 2 . 8 (6 8 )6 X + 5 = 1 7 , 6 x + 5 5 = 1 7 5 , 6 x 6 = 1 2 6 , x = 2 ; (6 9 )0 . 6 (2 . 5 + X )= 4 . 2 , 0 . 6 (2 . 5 + X ) 0 . 6 = 4 . 2 0 . 6 , 2 . 5 + x = 7 , 2 . 5 + x 2 . 5 = 7 2 . 5 , x = 4 . 5 ; (7 0 ) : = X :, x = , 解方程专项练习- - - - 1 6 x =, x = 0 . 6 (7 1 ), , , ; (7 2 ) , , , , ; (7 3 ), , , (7 4 )4 ( + x )=, + 4 x =, + 4 x =, 4 x = 4 , x = 1 ; (7 5 ) 0 . 2 5 + x = , 0 . 2 + x = , 0 . 2 + x 0 . 2 = 0 . 2 , x =, x = (7 6 )x , , , x =; (7 7 )2 0 0 :6 = x :, 6 x = 2 0 0 , 6 x 6 = 4 8 0 6 , x = 8 0 (7 8 )4 X = , 4 X X = X , X = 4 , X = 4 , X = 1 0 ; (7 9 )8 (x 2 )= 2 (x + 7 ) , 8 X 1 6 = 2 X + 1 4 , 6 X 1 6 = 1 4 , 6 X = 3 0 , X = 5 ; (8 0 ):1 8 %=, X = 0 . 1 8 6 . 5 , X = 1 . 1 7 , X = 7 . 8 (8 1 ) 2 x = , 2 x + 2 x = + 2 x , + 2 x = , 解方程专项练习- - - - 1 7 + 2 x = , 2 x =, 2 x 2 = 2 , x =; (8 2 ) x + x = 4 6 , x ( + )= 4 6 , x = 4 6 , x = 4 6 , x = 4 0 ; (8 3 ) :x = : , x = , x =, x = , x =; (8 4 )=, 1 . 6 x = 6 . 4 2 , 1 . 6 x = 1 2 . 8 , 1 . 6 x 1 . 6 = 1 2 . 8 1 . 6 , x = 8 (8 5 )5 (3 x 4 )2 (x 1 )= 5 (2 x 1 ) 1 5 x 2 0 2 x + 2 = 1 0 x 5 , 1 3 x 1 8 = 1 0 x 5 , 1 3 x 1 8 1 0 x = 1 0 x 5 1 0 x , 3 x 1 8 = 5 , 3 x 1 8 + 1 8 = 5 + 1 8 , 3 x = 1 3 , 3 x 3 = 1 3 3 , x =; (8 6 )= , 3 (6 x 1 )= 6 4 , 1 8 x 3 = 6 4 , 1 8 x 3 + 3 = 6 4 + 3 , 1 8 x = 6 7 , 1 8 x 1 8 = 6 7 1 8 , x = (8 7 )8 (2 X 7 )= 5 (X + 1 3 ) , 1 6 x 5 6 = 5 x + 6 5 , 1 6 x 5 6 5 x = 5 x + 6 5 5 x , 1 1 x 5 6 = 6 5 , 1 1 x 5 6 + 5 6 = 6 5 + 5 6 , 1 1 x = 1 2 1 , 1 1 x 1 1 = 1 2 1 1 1 , x = 1 1 , (8 8 )3 (x + 4 . 5 )= 6 0 , 3 (x + 4 . 5 ) 3 = 6 0 3 , x + 4 . 5 = 2 0 , x + 4 . 5 4 . 5 = 2 0 4 . 5 , x = 1 5 . 5 (8 9 )1 . 6 x + 2 . 4 = 7 . 5 2 , 1 . 6 x + 2 . 4 2 . 4 = 7 . 5 2 2 . 4 , 1 . 6 x = 5 . 1 2 , 1 . 6 x 1 . 6 = 5 . 1 2 1 . 6 , x = 3 . 2 ; (9 0 )3 (x 0 . 8 )= 6 . 3 , 3 x 2 . 4 = 6 . 3 , 3 x 2 . 4 + 2 . 4 = 6 . 3 + 2 . 4 , 3 x = 8 . 7 , 3 x 3 = 8 . 7 3 , x = 2 . 9 ; (9 1 )2 8 . 4 5 x = 5 . 8 , 2 8 . 4 5 x + 5 x = 5 . 8 + 5 x , 5 . 8 + 5 x = 2 8 . 4 , 5 . 8 + 5 x 5 . 8 = 2 8 . 4 5 . 8 , 5 x = 2 2 . 6 , 5 x 5 = 2 2 . 6 5 , x = 4 . 5 2 (9 2 ) x : = 2 5 x = 3 , 2 5 x = , 解方程专项练习- - - - 1 8 2 5 x 2 5 =, x =; (9 3 ) + 2 x = , + 2 x=, 2 x = 0 , x = 0 ; (9 4 )x = 1 5 %, x x = 1 5 %x , 0 . 1 5 x = 0 . 1 5 , 0 . 1 5 x 0 . 1 5 = 0 . 1 5 0 . 1 5 , x = 1 ; (9 5 ) x x =, x =, x=, x = (9 6 )x + 5 0 %x = 6 , 1 . 5 x = 6 , 1 . 5 x 1 . 5 = 6 1 . 5 , x = 4 ; (9 7 ) :x = 0 . 3 :1 2 , 0 . 3 x =, 0 . 3 x 0 . 3 = 9 0 . 3 , x = 3 0 ; (9 8 )4 x + 2 (8 x )= 2 6 , 4 x + 1 6 2 x = 2 6 , 2 x + 1 6 = 2 6 , 2 x + 1 6 1 6 = 2 6 1 6 , 2 x 2 = 1 0 2 , x = 5 (9 9 ) x = 0 , x + = 0 + , x = , x 3 = 3 , x = ; (1 0 0 ) + x = 1 , + x = 1 , x = , x = , x = 1 ; (1 0 1 )x ( + )=, x =, x =, x = (1 0 2 ), , , 3 x 3 =, x = ; (1 0 3 ), , , x = 2 0 ; (1 0 4 )x , , , x =; (1 0 5 )x , 解方程专项练习- - - - 1 9 x , x = (1 0 6 )5 x + 3 5 = 6 5 0 , 5 x + 3 5 3 5 = 6 5 0 3 5 , 5 x = 6 1 5 , 5 x 5 = 6 1 5 5 , x = 1 2 3 ; (1 0 7 )7 2 0 3 x = 8 0 , 7 2 0 3 x 3 x = 8 0 3 x , 2 4 0 x = 7 2 0 , 2 4 0 x 2 4 0 = 7 2 0 2 4 0 , x = 3 ; (1 0 8 )3 . 6 x 0 . 9 x = 8 . 1 , (3 . 6 0 . 9 )x = 8 . 1 , 2 . 7 x = 8 . 1 , 2 . 7 x 2 . 7 = 8 . 1 2 . 7 , x = 3 ; (1 0 9 )4 4 . 5 3 x = 6 , 1 8 3 x = 6 , 1 8 3 x + 3 x = 6 + 3 x , 6 + 3 x = 1 8 , 6 + 3 x 6 = 1 8 6 , 3 x = 1 2 , 3 x 3 = 1 2 3 , x = 4 (1 1 0 )=, 2 . 5 x = 1 0 0 . 8 , 2 . 5 x 2 . 5 = 8 2 . 5 , x = 3 . 2 ; (1 1 1 )6 3 1 . 8 X = 7 . 2 , 1 8 1 . 8 X = 7 . 2 , 1 8 1 . 8 X + 1 . 8 X = 7 . 2 + 1 . 8 X , 7 . 2 + 1 . 8 X = 1 8 , 7 . 2 + 1 . 8 X 7 . 2 = 1 8 7 . 2 , 1 . 8 X = 1 0 . 8 , 1 . 8 X 1 . 8 = 1 0 . 8 1 . 8 , X = 6 (1 1 2 ) x = , x = , x =; (1 1 3 )x = 4 2 , x = 4 2 , x = 9 ; (1 1 4 ) x + =, x + = , x = , x = , x = (1 1 5 )7 x 3 = 8 . 1 9 , 7 x 3 3 = 8 . 1 9 3 , 7 x = 2 4 . 5 7 , 7 x 7 = 2 4 . 5 7 7 , x = 3 . 5 1 ; (1 1 6 )1 2 :0 . 6 = x : , 0 . 6 x = 1 2 , 0 . 6 x = 6 , 0 . 6 x 0 . 6 = 6 0 . 6 , x = 1 0 ; (1 1 7 )3 (x + 2 )= 4 (x + 1 ) , 3 x + 6 = 4 x + 4 , 3 x + 6 3 x = 4 x + 4 3 x , x + 4 = 6 , x + 4 4 = 6 4 , x = 2 ( 1 1 8 ) 3 x 7 0 %x = 9 . 2 , 3 x 0 . 7 x = 9 . 2 , 2 . 3 x = 9 . 2 , 2 . 3 x 2 . 3 = 9 . 2 2 . 3 , x = 4 ; ( 1 1 9 ) 6 + x = 2 4 0 , 6 + x 6 = 2 4 0 6 , x = 2 3 4 , 解方程专项练习- - - - 2 0 x = 2 3 4 , x = 3 9 0 (1 2 0 )2 2 . 5 0 . 4 x = 1 2 . 5 , 2 2 . 5 0 . 4 x + 0 . 4 x = 1 2 . 5 + 0 . 4 x , 1 2 . 5 + 0 . 4 x = 2 2 . 5 , 1 2 . 5 + 0 . 4 x 1 2 . 5 = 2 2 . 5 1 2 . 5 , 0 . 4 x 0 . 4 = 1 0 0 . 4 , x = 2 5 ; (1 2 1 )x :3 . 5 = 4 :2 , 2 x = 3 . 5 4 , 2 x 2 = 1 4 2 , x = 6 (1 2 2 )x 0 . 8 x 6 = 1 6 , 0 . 2 x 6 = 1 6 , 0 . 2 x 6 + 6 = 1 6 + 6 , 0 . 2 x 0 . 2 = 2 2 0 . 2 , x = 1 1 0 ; (1 2 3 ) : = x :8 , x = 8 , x = 8 , x = 4 ; (1 2 4 ), 0 . 0 6 x = 2 0 . 0 1 5 , 0 . 0 6 x 0 . 0 6 = 0 . 0 3 0 . 0 6 , x = 0 . 5 ; (1 2 5 )x :1 5 = : , x = 1 5 , x 6 = 1 5 6 , x = 4 0 ; (1 2 6 ) x + x =, x =, x =, x = ; (1 2 7 )x 5 0 % x = 5 , x = 5 , x 6 = 5 6 , x = 3 0 ; (1 2 8 )1 x = , 1 x + x = + x , + x = 1 , + x = 1 , x = , x =; (1 2 9 )2 . 5 + 1 x = 3 , 2 . 5 + 1 x 2 . 5 = 3 2 . 5 , x =, x = , x = (1 3 0 )3 x 2 = 4 , 3 x 2 + 2 = 4 + 2 , 3 x = 6 , 3 x 3 = 6 3 , x =; (1 3 1 )8 . 5 3 x = 2 , 8 . 5 3 x + 3 x = 2 + 3 x , 3 x + 2 = 8 . 5 , 3 x + 2 2 = 8 . 5 2 , 3 x = 6 , 3 x 3 = 6 3 , 解方程专项练习- - - - 2 1 x = 2 ; (1 3 2 )3 x = 4 , 3 x x = 4 x , 4 x = 3 , 4 x 4 = 3 4 , x = (1 3 3 ) x 5 %= 1 7 . 5 4 , 解: x 5 %+ 5 %= 1 7 . 5 4 + 5 %, x= 1 7 . 5 9, x = 2 3; (1 3 4 ) : = : (4 x ) , 解:4x =, 2 x + x =x , 2 + x, = x, x = 3 ( 1 3 5 ) 6 x + 3 1 = 4 9 , 6 x + 3 1 3 1 = 4 9 3 1 , 6 x = 1 8 , 6 x 6 = 1 8 6 , x = 3 ; ( 1 3 6 ) 7 x 3 = 8 . 1 9 , 7 x 3 3 = 8 . 1 9 3 , 7 x = 2 4 . 5 7 , 7 x 7 = 2 4 . 5 7 7 , x = 3 . 5 1 ; ( 1 3 7 ) 3 2 . 8 9 x = 1 7 . 5 , 3 2 . 8 9 x + 9 x = 1 7 . 5 + 9 x , 1 7 . 5 + 9 x = 3 2 . 8 , 1 7 . 5 + 9 x 1 7 . 5 = 3 2 . 8 1 7 . 5 , 9 x = 1 5 . 3 , 9 x 9 = 1 5 . 3 9 , x = 1 . 7 ; ( 1 3 8 ) x 0 . 3 6 x = 1 6 , (1 0 . 3 6 )x = 1 6 , 0 . 6 4 x = 1 6 , 0 . 6 4 x 0 . 6 4 = 1 6 0 . 6 4 , x = 2 5 ; ( 1 3 9 ) 6 7 + 3 x = 6 9 , 4 2 + 3 x = 6 9 , 4 2 + 3 x 4 2 = 6 9 4 2 , 3 x = 2 7 , 3 x 3 = 2 7 3 , x = 9 ; ( 1 4 0 ) 6 x + 2 x 5 6 = 0 , (6 + 2 )x 5 6 + 5 6 = 0 + 5 6 , 8 x = 5 6 , 8 x 8 = 5 6 8 , x = 7 ( 1 4 1 ) 3 x 0 . 4 5 4 = 2 . 7 , 3 x 1 . 8 = 2 . 7 , 3 x 1 . 8 + 1 . 8 = 2 . 7 + 1 . 8 , 3 x = 4 . 5 , 3 x 3 = 4 . 5 3 , x = 1 . 5 ; ( 1 4 2 ) 5 . 8 x 4 . 6 x = 0 . 9 6 , 1 . 2 x = 0 . 9 6 , 1
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