人教版初中七年级数学解一元一次方程专题练习

1 解一元一次方程的练习题解一元一次方程的练习题 解下列方程 每题解下列方程 每题 4 分 分 1 3 x 2 2 5 x 2 2 2 x 3 5 1 x 3 x 1 3 4 3 1 2 2 23xxx 3 2 1 21 xxx 5 1 6 2x 1 3 x 2 2 1 2 1 3 1 x 7 8 x x 3 8 12 5 4 2 13 xx 9 10 31 0 40 3 42 xx 3142 1 25 xx 11 12 31257 2 43 yy 57 61 32 xx 2 13 14 1 4 33 2 1 mm 5 2 2 2 1 yy y 15 16 12 1 36 xx x 38 1 23 xx 17 x 3 2 x 3 18 1 2 1 2 3 5 0 1 2 0 2 xx 19 20 3 01 0 3 2 0 1 xx223 1 46 xx 21 22 124 362 xxx xx2 3 2 3 1 4 2 3 3 23 24 3y 7 2 y 112 1 1 223 xxx 2 7 3 2 25 设 k 为整数 方程 kx 4 x 的解 x 为自然数 求 k 的值 73 24 xx 23 2 55 x 70 20 3 6xx 31 20 54 x 4 25 10 5 x 15 68xx X X X X 121121 5X5X 3 3 X X 1212 8 3 21 5 7 5 3 2 4 1 6X6X 5 5 13 4 13 4 3X 3X 8 3 4 1 4 3 X 8 3 4 X X X X 4X 6 2 7 2 16 7 8 7 4 3 3 2 X X X X X X 1 12 2 5 5 3 3 1 10 0 5 3 72 25 9 8 6 1 51 16 X X 4x 3 9 29 x x 4 35 6 45 26 25 13 2 1 6 1 X X 21 21 4 4 10 3 3 2 20 4 1 xx8 6 2 2 x 6X6X 5 5 13 4 13 4 X X 4 6 38 2 5 1 3 3 10 5 5X 5X X X X X 19 15 21 8 15 4 5 4 28 15 X 12 X X 3 2 4 1 5 3 72 25 9 8 6 1 51 16 X X 0 25 30 35 6 45 26 25 13 4 1 4 X 4 0 7X 102 X X 42 42 X X X 105 3 2 2 1 4 1 X X 400 X 0 125X 8 8 3 X 36 4 3 6 X X X 18X 18 X X x x 0 375x 0 375x 3 3 7 7 1 1 6 6 3 3 8 8 1 13 3 1 12 2 6 5 x x 4 4 X 7 3 X 12 5 X 2 4 5 8 3 2 2 1 8 3 0 36 5 x x 4 5 7 x 25 x 10 3 4 3 5 2 3 1 2 x 0 8x 16 6 20 x 8 5 1 5 x x x x 4 4 2121 4 4 5 5 X 25 X 90 X X 3 7 8 9 一 解方程 7 1 3 5X 1 8 12 3 5 X X 21 6 X X 5 2 5 4 5 2 2 1 7 3 6X 2 2 16 8 X X 2 7 2 4 3 0 8X 4 1 6 3 5X 2 10 4 X 0 25X 3 9 X X 5 2 10 3 10 X 11 2X 7X 12 X 5 2 10 3 10 9 8 3 5 2 13 X 14 X 15 X 10 10 7 25 14 2 1 4 3 9 5 16 180 6X 330 17 2 2X 1 10 18 X 0 8X 10 8 19 15X 2 60 20 4X X 3 15 21 3 4X 1 8 8 6 22 5X X 2 4 23 1 5X X 1 24 6 6X 6X 1 8 练习二练习二 1 12 3 9 x 5 x 4 7 7 x 2 6x 17 13 3 9 10 x 10 9x 4 2 x 1 4 5 13x 26 13 6 75 5x 70 7 2 6x 2 8 8 25x 12 6 300 9 24x 12 132 9 10 56 12x 8 11 2x 4 30 12 12x 11x 79 13 13x 12 x 2 0 14 67 12x 7 15 x 1 3x 2 x 1 16 18x 16x 18 1 50 70 17 14 60 x 2 20 x 18 4x 9 x 2 200 19 100 x 1 10 x 3x 2 100 3x 2 10 x x 1 1171 20 5x 4 5 103 x 486 练习三练习三 1 2x 8 16 2 x 5 10 3 x 7x 8 10 4 9x 3x 6 5 6x 8 4 6 5x x 9 7 x 8 6x 8 4 5x 20 9 2x 6 12 10 7x 7 14 11 6x 6 0 12 5x 6 11 13 2x 8 10 14 1 2x 8 4 15 x 5 6 7 16 3x 7 28 17 3x 7 26 18 9x x 16 19 24x x 50 20 6 7x 8 4 30 3x 8 30 31 6x 6 12 32 3x 3 1 33 5x 3x 4 34 2x 16 19 35 5x 8 19 36 14 6x 8 11 37 15 6x 27 38 5 8x 4 39 7x 8 15 40 9 2x 1 41 4 5x 9 42 10 x 8 43 8x 9 17 44 9 6x 14 45 x 9x 4 7 46 2x 9 17 47 8 4x 6 48 6x 7 12 49 7x 9 8 50 x 56 1 51 8 7x 1 52 x 30 12 53 6x 21 21 54 6x 3 6 55 9x 18 56 4x 18 13 57 5x 9 11 12 58 6 2x 11 59 x 4 8 23 60 7x 12 8 61 X 5 7 2 15 62 15 5X 2X 18 62 3X 0 7 5 63 3 5 2 4 2 x 64 26 1 5 2x 65 0 5 16 16 0 2 4x 66 9 25 X 0 403 67 16 9 X 0 3 68 X 0 5 2 6 69 x 13 33 70 3 5x 80 71 1 8 6x 54 72 6 7x 60 3 6 7 73 9 4x 40 74 0 2x 0 4 0 5 3 7 75 9 4x 0 4x 16 2 76 12 4x 20 77 1 3 x 5 6