华师版七下一元一次方程50道练习题(含答案)

1、华师版七下一元一次方程 50 道 练习题（含答案）3一32；一元一次方程50道练习题2x 14;20.8x -0.1二0.5x -0.7；口十 U;U;463(1x 1) 2丄3x;2 3 2323 323 -(2x 3) -(2x 4 -(2x 5) - (2x6).23455x+2=7x- 8;712-2y-1- 1-2y 2y-1;223(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)-5(15)1 x_1空一1一上；21(3 2 212，OfdxI) _8 =?x 1；4 3 2425127x-12(x)=8(6x-9)323；225% x

2、5；2 - 3x 5 x(20)(27)2(0.3x-4)-5(0.2x+3)=9(28)2(x+3)-2(x+1)-5=0 (29)3x-刊6-口326(18)(16)(17)(19)(x 1) 30%(100-x)(21)(21)6倨討1卜”+5 = 1(22)2(2x-1)-4(4x-1)-5(2x+1)-佃佃=0(23)31一口丄3462(24)0.4x0.90.1x -0.50.03 0.02x0.5-一0.20.03(25)3-(-x 1) 2一2丄二空2 3 423(26)234(5x-1)-8-20-7=11(31)(31)制5(宁4)6 g(32)3x=2x+5(33)2y+

3、3=y1(34)7y=43y(35)(35)-5y=1(36)10 x+7=12x53x(37)8x4+2x= 4x3(38).2(3x+4)=6-5(x-7)(39).x3十 7236111(40)x-Jx-f =2(42)-(x -5)x-2 _2 _(43)4x-1.55x 0.80.50.2(44). x-1 -xx+23=6 35罟3(41)2_2.P_3.50.010.2(45).0.4y 0.9y - 50.3 0.2y0.5-2=0.3(46) 3(x+2)1-3(2x-3)=2(2x-3)(47).ill i_ _ -(.333、11x-2)-2-2=0(48)、5( y+8

4、)-5=4( 2y7);(49)、233x(1 -32-x.2_3x36；(50)、1.8-8x 1.33x 5x-0.4； ;2(x+2)(1)x =2; (2)x =2; (3)x =7; (4)x =1;(5)x =5; (6)x =31； (7)x = -; (8)x=.3 72(9)x=5; (10)x=7； (11)x=3; (12)y ;8 2(13)x=0; (14)x=6; (15)x=-; (16)x一7丄.74x =17.83x二918.519x =2253050616x =一202535_721.x=822 .x=-123. x=-324 x=91825.x=526.x=127、x=-80283、x=- 29、522930、24.9631、x=132)x=533)y=-4234)y=2535)y=-5636)x=-1237)x=-638 x=339.x=-40.x=1741.x = 2265(42