1、初一数学上册解方程专项练习题575 x 1 x 0.4x0.12.88.4x9 2 6 4 1 4x2x 3(x5)3(x1)195 3 1 3 (8x1)x6 3x4(2x)99 5 y1 y1 2 5x3(x3)5 3 6 1 2 (12x)(3x4) 7(7x7)108 7 5 x 1 x 0.2x0.25.70.4x6 2 3 2 1 9x9x 3(x1)6(x7)157 4 1 1 (5x7)x2 5x9(9x)18 5 y2 y3 3 3.5x0.5(x6)15 4 5 1 2 (33x)(2x2) 3(7x1)195 7 5 x 1 x 0.7x0.23.39.6x3 2 9 4
2、 1 7x3x 6(x9)6(x1)29 6 1 2 (2x2)x1 9x5(12x)59 5 y2 y2 6 3.5x3(x8)10 2 5 1 2 (52x)(2x5) 6(3x7)85 7 7 x 1 x 0.3x0.10.87.7x3 8 6 8 1 9x1x 2(x8)3(x8)175 9 1 2 (7x7)x9 4x5(15x)18 5 y2 y1 8 1x1.5(x2)5 3 5 1 2 (12x)(2x4) 4(7x3)13 9 5 x 1 x 0.7x0.28.82.2x6 4 9 4 1 5x5x 6(x3)7(x4)103 4 1 4 (8x5)x7 3x5(3x)97
3、5 y1 y3 1 2.5x1(x1)45 3 6 1 2 (43x)(4x3) 6(5x6)35 5 5 x 1 x 0.2x0.13.29.8x6 4 6 2 1 2x6x 8(x7)7(x3)67 7 1 2 (9x5)x3 6x7(4x)32 5 y1 y2 2 2.5x5(x1)45 3 6 1 2 (32x)(2x5) 3(7x6)158 7 7 x 1 x 0.5x0.87.66.3x9 6 3 8 1 5x4x 4(x4)5(x5)165 7 1 2 (3x9)x2 8x7(4x)97 5 y1 y3 8 4.5x2(x7)45 2 6 1 2 (44x)(5x3) 5(2x3
4、)194 7 7 x 1 x 0.7x0.17.46.2x9 2 6 8 1 9x6x 4(x2)2(x3)187 3 1 4 (9x9)x8 9x6(2x)87 5 y2 y2 6 3x1(x2)50 3 5 1 2 (43x)(3x5) 7(5x1)163 5 5 x 1 x 0.9x0.840.7x3 4 3 2 1 3x5x 2(x4)8(x6)163 5 1 3 (2x7)x9 2x2(11x)83 5 y2 y1 1 1x10(x4)15 4 5 1 2 (12x)(2x3) 9(4x4)25 5 5 x 1 x 0.1x0.53.77.5x3 6 9 2 1 4x1x 6(x8)
5、3(x5)145 3 1 1 (3x7)x1 3x2(1x)64 5 y1 y2 5 2.5x1(x6)35 2 5 1 2 (24x)(5x2) 7(8x1)155 3 7 x 1 x 0.9x0.76.94.4x3 2 6 8 1 9x1x 6(x2)8(x3)127 7 1 2 (5x5)x4 5x5(13x)84 5 y3 y1 4 4x3(x3)40 4 6 1 2 (33x)(2x4) 8(4x4)95 3 7 x 1 x 0.1x0.36.92.7x9 6 9 8 1 8x9x 3(x1)6(x5)55 3 1 1 (4x6)x2 5x7(6x)99 5 y2 y3 8 5x1(
6、x7)15 2 5 1 2 (42x)(2x1) 4(8x5)92 5 5 x 1 x 0.1x0.30.56.5x9 2 9 4 1 9x4x 9(x3)2(x6)17 7 1 4 (9x6)x4 2x6(7x)76 5 y3 y3 7 2x3(x3)30 2 6 1 2 (22x)(2x2) 5(2x4)195 9 7 x 1 x 0.5x0.92.54.6x9 8 3 8 1 3x3x 6(x3)8(x7)135 5 1 4 (3x3)x8 4x3(3x)99 5 y1 y2 7 2x2.5(x6)5 3 6 1 2 (42x)(3x3) 5(2x4)143 3 5 x 1 x 0.4x0.65.71.6x9 2 9 4 1 2x3x 2(x1)3(x1)35 5 1 1 (2x8)x7 6x3(8x)43 5 y3 y1 4 5x5(x5)10 4 5 1 2 (14x)(5x5) 5(2x1)139 3 5 x 1 x 0.1x0.14.47.1x9 8 9 8 1 2x9x 9(x1)9(x2)165 8 1 4 (4x7)x6 6x7(19x)57 5 y2 y3 1 2x5.5(x7)45 4 6 1 2 (14x)(4x4) 3(4x1)17 3
