初一数学上册解方程专项练习题22.docx

1、初一数学上册解方程专项练习题227 x 1 x 0.2x0.88.13.5x9 6 9 8 1 5x5x 4(x8)3(x1)19 8 1 1 (6x4)x1 8x7(11x)27 5 y1 y1 9 4x8(x5)25 2 6 1 2 (24x)(5x3) 7(7x8)83 9 5 x 1 x 0.6x0.19.30.3x3 6 9 2 1 5x5x 6(x4)4(x4)77 3 1 3 (5x9)x7 9x6(12x)86 5 y1 y2 3 2x7(x5)35 3 5 1 2 (13x)(2x4) 7(4x9)134 5 5 x 1 x 0.6x0.21.75.3x6 4 6 2 1 2

2、x8x 3(x5)5(x4)53 4 1 3 (6x3)x5 3x2(16x)24 5 y3 y1 8 4.5x7.5(x8)40 4 5 1 2 (54x)(3x2) 3(2x8)206 7 5 x 1 x 0.9x0.51.36.2x6 2 3 4 1 5x1x 2(x2)9(x5)183 2 1 2 (8x4)x3 2x3(4x)92 5 y3 y1 8 2.5x2(x1)20 4 6 1 2 (42x)(2x1) 7(3x3)108 3 5 x 1 x 0.8x0.23.88.7x9 6 6 2 1 5x9x 4(x2)2(x8)189 2 1 2 (4x3)x8 5x2(11x)67

3、 5 y2 y3 1 1.5x9.5(x8)5 4 5 1 2 (43x)(5x1) 9(6x1)133 7 7 x 1 x 0.5x0.171.9x9 4 3 8 1 5x5x 4(x2)5(x8)49 9 1 2 (2x2)x7 3x3(13x)26 5 y2 y3 2 5x2.5(x2)20 3 5 1 2 (42x)(3x3) 3(4x2)187 3 7 x 1 x 0.1x0.80.58.4x9 2 9 2 1 7x9x 2(x5)9(x3)109 6 1 2 (8x4)x7 7x7(8x)42 5 y1 y3 4 1x1.5(x4)20 2 5 1 2 (54x)(4x5) 2(5

4、x9)186 9 5 x 1 x 0.6x0.22.51x3 4 3 2 1 7x5x 9(x8)3(x7)129 5 1 2 (7x1)x5 4x7(19x)23 5 y1 y3 4 0.5x0.5(x9)30 4 6 1 2 (34x)(5x3) 6(8x6)47 3 7 x 1 x 0.2x0.96.84.4x3 4 3 4 1 8x5x 5(x2)5(x4)17 7 1 3 (4x3)x9 7x2(12x)84 5 y2 y2 9 1x9.5(x7)20 3 5 1 2 (24x)(2x4) 5(4x9)58 3 5 x 1 x 0.8x0.30.47.6x9 8 9 8 1 3x6x

5、 7(x9)2(x9)69 2 1 2 (5x9)x1 7x8(8x)37 5 y3 y2 4 0.5x7.5(x9)10 3 5 1 2 (12x)(4x4) 4(9x7)13 9 7 x 1 x 0.3x0.37.26.3x9 2 9 8 1 8x1x 9(x5)7(x3)69 9 1 1 (5x8)x4 8x5(19x)19 5 y1 y2 4 0.5x3(x7)30 3 6 1 2 (44x)(5x4) 3(5x6)188 5 7 x 1 x 0.8x0.32.29.2x3 2 9 2 1 9x3x 3(x1)5(x5)153 6 1 1 (8x6)x7 5x9(19x)67 5 y2

6、 y1 1 0.5x6(x3)35 4 5 1 2 (13x)(4x1) 6(4x5)83 9 5 x 1 x 0.9x0.10.63.5x3 6 3 8 1 7x3x 5(x8)9(x5)49 8 1 3 (4x6)x6 4x4(14x)43 5 y3 y3 9 4x8.5(x8)45 3 5 1 2 (24x)(2x1) 8(9x1)158 7 7 x 1 x 0.4x0.83.10.4x9 4 3 8 1 6x1x 4(x7)8(x5)75 7 1 2 (4x2)x8 5x5(20x)67 5 y1 y3 4 1.5x3(x2)50 3 5 1 2 (14x)(4x5) 6(2x9)199 5 7 x 1 x 0.5x0.27.69.7x3 2 9 8 1 4x7x 6(x1)5(x4)179 3 1 2 (4x7)x1 9x5(8x)39 5 y3 y3 9 2x1(x4)30 3 5 1 2 (22x)(5x1) 5(6x9)115 9 5 x 1 x 0.1x0.50.55.8x3 8 9 2 1 8x9x 2(x6)9(x6)159 2 1 3 (7x3)x2 7x4(3x)66 5 y2 y1 1 5x4(x9)40 2 5 1 2 (53x)(5x3) 9(5x9)15 5