初一数学上册一元一次方程综合练习题74.docx

1、初一数学上册一元一次方程综合练习题747 x 1 x 0.7x0.49.14.9x3 8 3 4 1 7x6x 8(x7)5(x7)159 8 1 2 (9x2)x8 6x6(19x)15 5 y3 y2 6 4x7(x6)35 4 6 1 2 (22x)(3x5) 3(9x6)92 5 7 x 1 x 0.7x0.21.15.5x6 6 3 4 1 3x6x 8(x1)9(x1)55 3 1 3 (7x9)x8 8x9(3x)77 5 y3 y2 7 4x4.5(x5)45 4 5 1 2 (43x)(4x4) 5(7x1)58 9 5 x 1 x 0.7x0.75.65.4x9 6 6 4

2、 1 4x4x 7(x8)5(x3)25 6 1 4 (4x3)x6 3x5(2x)69 5 y1 y3 3 5x1.5(x7)20 3 6 1 2 (43x)(3x5) 8(9x3)107 7 7 x 1 x 0.7x0.70.69.1x9 8 9 2 1 9x3x 4(x3)4(x2)133 3 1 3 (7x7)x8 2x4(8x)93 5 y3 y2 4 0.5x1.5(x2)20 3 5 1 2 (34x)(3x4) 9(6x3)136 9 5 x 1 x 0.7x0.59.26.5x9 6 6 4 1 2x1x 7(x2)5(x7)175 2 1 2 (6x8)x3 9x7(18x

3、)99 5 y1 y3 6 2.5x9.5(x3)35 2 5 1 2 (32x)(4x3) 3(8x5)184 5 5 x 1 x 0.9x0.34.53.8x9 4 6 4 1 7x4x 6(x9)3(x4)113 8 1 4 (5x6)x2 4x5(20x)66 5 y3 y3 1 3x5(x4)10 2 6 1 2 (34x)(4x5) 6(8x3)196 3 5 x 1 x 0.7x0.88.56.7x3 6 9 2 1 4x6x 4(x3)9(x9)209 7 1 3 (9x4)x2 5x8(6x)97 5 y2 y3 2 5x4(x3)10 4 5 1 2 (22x)(2x5)

4、5(6x4)106 5 7 x 1 x 0.9x0.776.6x9 8 9 4 1 2x4x 3(x6)4(x9)147 2 1 4 (2x3)x1 5x6(16x)77 5 y1 y3 4 4.5x7(x5)25 3 6 1 2 (33x)(3x4) 3(4x3)96 9 5 x 1 x 0.3x0.87.69.3x9 8 3 4 1 7x5x 2(x2)4(x4)129 4 1 3 (3x2)x3 5x4(4x)24 5 y1 y3 2 2.5x9(x9)40 3 6 1 2 (52x)(5x1) 3(6x5)15 7 7 x 1 x 0.1x0.91.67.4x6 8 3 8 1 6x1x 8(x3)2(x9)167 5 1 3 (8x9)x1 3x8(12x)25 5 y3 y2 7 3x2.5(x1)30 3 5 1 2 (34x)(2x2) 7(2x3)203 7