初一数学上册一元一次方程综合练习题72.docx

1、初一数学上册一元一次方程综合练习题725 x 1 x 0.5x0.24.54.4x3 8 6 2 1 6x9x 8(x9)9(x2)83 7 1 1 (5x5)x3 8x2(18x)28 5 y1 y2 8 0.5x6.5(x4)45 4 6 1 2 (42x)(2x3) 3(3x8)29 7 5 x 1 x 0.4x0.84.14.8x9 4 3 4 1 6x2x 3(x2)7(x3)135 5 1 1 (7x1)x4 9x3(5x)63 5 y2 y1 2 1.5x4(x3)35 3 6 1 2 (24x)(5x2) 6(2x2)196 3 5 x 1 x 0.6x0.89.84.6x3

2、4 6 4 1 5x1x 7(x7)8(x1)103 2 1 4 (8x8)x8 6x9(12x)22 5 y2 y1 5 4x5.5(x4)50 4 6 1 2 (43x)(4x5) 2(5x4)145 9 7 x 1 x 0.7x0.95.96.2x9 8 3 4 1 8x5x 8(x1)2(x6)185 5 1 4 (7x4)x5 7x7(20x)69 5 y2 y2 1 0.5x9(x8)45 4 6 1 2 (44x)(5x2) 8(5x2)128 5 5 x 1 x 0.1x0.16.64.6x6 2 9 8 1 3x6x 7(x7)4(x3)179 4 1 4 (2x9)x8 4

3、x6(8x)33 5 y2 y1 2 5x2.5(x2)20 4 5 1 2 (42x)(3x4) 3(9x2)13 7 5 x 1 x 0.3x0.35.76.2x3 8 3 8 1 6x8x 8(x5)4(x3)87 7 1 4 (8x8)x3 9x8(19x)63 5 y1 y2 7 4x10(x2)30 2 5 1 2 (33x)(2x5) 6(8x3)165 9 7 x 1 x 0.5x0.15.84.2x6 4 3 4 1 9x7x 5(x1)2(x1)25 3 1 2 (2x6)x4 6x7(14x)32 5 y2 y2 9 4.5x7.5(x7)35 4 6 1 2 (53x)

4、(3x5) 3(5x7)162 3 7 x 1 x 0.8x0.17.67.1x9 4 9 4 1 2x7x 5(x7)8(x9)47 4 1 3 (4x1)x7 4x4(5x)82 5 y1 y2 8 3x6(x2)50 2 6 1 2 (12x)(2x3) 8(3x2)109 5 7 x 1 x 0.6x0.41.26.9x3 4 6 4 1 9x9x 9(x5)6(x4)103 6 1 2 (5x8)x1 5x4(7x)93 5 y1 y1 9 4.5x1.5(x1)45 2 5 1 2 (24x)(3x3) 7(7x3)76 5 5 x 1 x 0.2x0.71.15.5x9 6 9 4 1 7x3x 8(x5)3(x2)59 9 1 2 (3x1)x1 7x7(9x)88 5 y2 y3 7 1x4.5(x6)10 3 5 1 2 (53x)(3x1) 9(8x9)94 3