初一数学上册一元一次方程综合练习题31.docx

1、初一数学上册一元一次方程综合练习题315 x 1 x 0.6x0.31.35.5x6 4 6 4 1 4x8x 8(x8)6(x7)53 2 1 2 (5x5)x8 6x4(14x)19 5 y2 y3 6 1.5x9(x3)45 4 5 1 2 (22x)(3x5) 3(9x1)196 5 7 x 1 x 0.6x0.34.43.6x9 4 3 8 1 6x1x 8(x4)3(x8)27 4 1 1 (2x1)x1 3x3(8x)55 5 y2 y1 2 1x7.5(x4)25 2 5 1 2 (13x)(5x4) 6(7x4)49 3 7 x 1 x 0.3x0.25.52.2x9 8 9

2、 8 1 6x9x 4(x4)5(x6)197 4 1 3 (4x5)x1 2x5(11x)14 5 y2 y3 9 4.5x4(x2)15 2 5 1 2 (53x)(2x4) 2(8x5)172 5 7 x 1 x 0.8x0.31.88.4x9 8 9 8 1 6x6x 8(x7)4(x6)209 7 1 3 (9x8)x2 7x9(16x)48 5 y1 y2 7 5x9.5(x3)50 2 5 1 2 (52x)(4x2) 6(6x8)204 3 7 x 1 x 0.2x0.12.43x6 4 6 8 1 4x2x 2(x9)5(x8)187 8 1 4 (6x6)x5 7x2(19

3、x)42 5 y1 y3 3 1x10(x7)45 3 6 1 2 (12x)(4x1) 3(6x5)19 5 5 x 1 x 0.9x0.51.97x9 4 9 8 1 9x7x 9(x8)8(x7)85 2 1 2 (2x9)x6 8x8(11x)84 5 y2 y2 1 2.5x5.5(x6)10 3 6 1 2 (44x)(5x4) 6(3x7)19 3 7 x 1 x 0.8x0.23.19.3x9 6 9 4 1 2x1x 9(x3)7(x3)163 4 1 4 (2x7)x4 8x5(11x)35 5 y2 y3 5 4.5x6.5(x7)35 2 5 1 2 (34x)(3x1

4、) 9(2x2)74 7 7 x 1 x 0.5x0.81.31.3x6 6 6 2 1 3x8x 8(x8)3(x5)193 6 1 2 (6x6)x7 8x7(8x)55 5 y3 y3 1 4x1.5(x9)30 3 5 1 2 (13x)(4x3) 6(2x6)36 5 7 x 1 x 0.2x0.25.47.9x6 2 3 8 1 9x2x 4(x8)5(x8)85 8 1 3 (5x8)x4 2x7(8x)35 5 y2 y2 5 2.5x7(x3)35 4 6 1 2 (54x)(4x1) 8(3x1)155 5 7 x 1 x 0.8x0.12.71.1x6 6 9 8 1 6x7x 8(x8)5(x9)55 2 1 1 (2x9)x1 7x6(3x)25 5 y2 y3 3 2x3.5(x9)15 2 6 1 2 (33x)(4x3) 7(2x8)166 5