初一数学上册一元一次方程综合练习题38.docx

1、初一数学上册一元一次方程综合练习题387 x 1 x 0.8x0.74.96.9x6 6 9 8 1 7x2x 9(x2)8(x6)125 4 1 4 (2x5)x7 5x5(11x)49 5 y1 y3 6 0.5x2(x8)35 3 6 1 2 (33x)(3x4) 6(2x9)23 7 5 x 1 x 0.7x0.32.27.5x6 2 9 4 1 5x9x 3(x1)8(x8)145 6 1 3 (5x4)x4 7x7(7x)75 5 y3 y3 7 1x1.5(x8)10 4 6 1 2 (52x)(4x3) 6(7x3)94 7 5 x 1 x 0.7x0.67.82.9x3 2

2、9 4 1 3x7x 6(x8)4(x5)85 9 1 4 (4x3)x2 3x3(19x)86 5 y3 y3 2 3.5x5.5(x7)10 3 5 1 2 (54x)(5x1) 6(9x1)33 5 5 x 1 x 0.3x0.26.41.5x3 2 9 4 1 2x4x 8(x7)9(x7)13 5 1 4 (8x6)x7 6x7(17x)75 5 y1 y1 8 2.5x8(x4)15 2 5 1 2 (32x)(3x2) 3(4x4)106 9 7 x 1 x 0.7x0.26.12.1x6 2 3 8 1 8x5x 5(x1)4(x3)123 2 1 4 (6x6)x4 8x8(

3、16x)28 5 y1 y3 7 5x8(x5)20 3 6 1 2 (34x)(2x1) 4(4x3)112 5 5 x 1 x 0.8x0.43.40.8x9 6 3 2 1 7x5x 8(x2)3(x6)197 8 1 1 (7x9)x4 9x7(14x)76 5 y2 y1 6 3x10(x1)50 2 6 1 2 (22x)(3x4) 8(4x5)94 3 7 x 1 x 0.7x0.84.53.4x6 8 3 8 1 9x8x 5(x8)6(x5)125 6 1 2 (2x5)x6 7x8(6x)93 5 y3 y2 8 5x6(x8)20 4 5 1 2 (53x)(4x2) 6

4、(6x6)159 3 5 x 1 x 0.3x0.14.61x9 8 3 4 1 6x3x 9(x9)3(x5)129 6 1 4 (7x9)x4 6x3(16x)38 5 y3 y2 5 1.5x7(x3)10 4 6 1 2 (42x)(3x3) 5(5x9)168 9 7 x 1 x 0.2x0.66.10.6x9 4 9 2 1 3x3x 5(x1)7(x2)117 6 1 1 (8x4)x3 3x2(9x)43 5 y3 y1 5 3.5x6(x8)45 4 5 1 2 (33x)(5x1) 5(5x3)195 9 7 x 1 x 0.2x0.59.24.9x9 4 3 4 1 4x6x 4(x9)5(x2)163 8 1 4 (7x7)x1 5x9(20x)18 5 y2 y2 1 3.5x0.5(x5)15 3 5 1 2 (33x)(2x3) 5(4x4)88 3