初一数学上册解方程专项练习题62.docx

1、初一数学上册解方程专项练习题627 x 1 x 0.2x0.33.83.9x9 6 6 4 1 5x1x 2(x1)3(x7)93 8 1 1 (3x5)x9 8x5(2x)42 5 y1 y3 9 1.5x4(x2)5 3 5 1 2 (43x)(3x4) 6(5x5)73 7 5 x 1 x 0.2x0.70.80.8x9 4 6 8 1 8x9x 3(x8)2(x2)45 3 1 2 (3x7)x9 4x6(20x)35 5 y3 y1 4 1x5.5(x8)35 2 6 1 2 (13x)(3x1) 6(5x4)17 3 5 x 1 x 0.5x0.76.62.8x9 4 9 8 1

2、3x2x 5(x6)4(x4)173 4 1 3 (4x5)x6 7x2(14x)87 5 y1 y2 5 4.5x1(x4)30 4 6 1 2 (34x)(2x1) 7(5x3)153 3 7 x 1 x 0.8x0.95.52.3x9 2 6 4 1 4x4x 6(x6)4(x7)29 6 1 1 (9x5)x4 8x3(19x)37 5 y2 y1 3 2x5(x7)30 2 6 1 2 (52x)(5x5) 6(8x9)178 7 7 x 1 x 0.5x0.72.10.6x6 8 3 4 1 4x8x 3(x6)6(x5)17 7 1 1 (3x6)x8 9x9(2x)65 5 y

3、3 y2 3 2.5x7.5(x5)40 3 6 1 2 (54x)(2x2) 2(3x5)96 9 5 x 1 x 0.8x0.79.30.9x3 4 6 8 1 2x5x 3(x6)4(x8)33 5 1 1 (4x7)x6 4x8(12x)35 5 y1 y2 9 1.5x9(x6)35 3 6 1 2 (54x)(5x3) 4(4x1)74 7 5 x 1 x 0.7x0.93.11.4x9 8 6 2 1 2x9x 6(x8)7(x6)15 6 1 1 (2x5)x5 8x6(1x)74 5 y1 y3 9 3x4(x7)40 2 5 1 2 (24x)(2x4) 5(7x9)66

4、7 7 x 1 x 0.7x0.19.65.2x3 4 3 2 1 9x4x 2(x7)6(x1)203 3 1 3 (8x9)x3 3x9(8x)78 5 y3 y2 9 1.5x6(x3)35 4 5 1 2 (52x)(4x4) 7(9x3)126 9 5 x 1 x 0.2x0.58.93.2x9 4 9 2 1 2x2x 7(x2)2(x9)157 5 1 4 (8x4)x4 5x6(3x)35 5 y3 y2 7 2x1(x9)40 4 6 1 2 (14x)(2x2) 2(6x4)108 3 7 x 1 x 0.7x0.30.62.3x9 4 9 8 1 9x3x 8(x1)6(

5、x6)79 3 1 4 (4x8)x9 5x2(11x)33 5 y2 y2 3 1.5x9.5(x1)30 2 5 1 2 (53x)(2x4) 5(8x9)117 5 5 x 1 x 0.9x0.38.97.8x6 8 3 4 1 6x6x 3(x5)6(x3)35 7 1 2 (6x8)x3 5x9(8x)82 5 y1 y1 5 1x6.5(x4)30 2 5 1 2 (22x)(5x5) 6(6x5)202 5 5 x 1 x 0.7x0.25.12.8x6 8 6 4 1 3x6x 5(x7)5(x7)119 6 1 1 (2x7)x9 8x4(6x)37 5 y1 y2 6 4.

6、5x1(x5)25 2 6 1 2 (43x)(2x5) 5(5x6)55 7 5 x 1 x 0.6x0.62.15.3x3 2 9 2 1 8x6x 6(x4)4(x6)95 2 1 4 (4x7)x3 6x9(1x)29 5 y3 y1 1 1.5x2(x4)10 4 6 1 2 (13x)(3x3) 6(6x2)177 5 7 x 1 x 0.7x0.60.94.1x6 6 3 8 1 8x1x 8(x6)7(x9)183 5 1 2 (7x4)x5 3x2(17x)92 5 y1 y2 9 1.5x2(x3)10 3 6 1 2 (52x)(3x1) 3(3x5)34 3 5 x 1 x 0.6x0.51.83.2x3 2 3 4 1 2x6x 2(x6)4(x2)197 5 1 4 (9x3)x7 6x8(5x)92 5 y2 y1 6 0.5x10(x2)5 4 6 1 2 (14x)(3x4) 9(3x2)113 3 7 x 1 x 0.6x0.97.43.1x3 4 3 8 1 6x5x 6(x6)8(x2)33 5 1 3 (6x6)x5 5x4(9x)46 5 y2 y3 6 2.5x1(x2)20 3 5 1 2 (43x)(3x2) 7(3x4)123 7