初一数学上册解方程专项练习题34.docx

1、初一数学上册解方程专项练习题345 x 1 x 0.5x0.31.89.4x6 2 6 4 1 9x4x 4(x9)4(x8)53 7 1 3 (9x8)x8 3x8(8x)35 5 y3 y2 5 3x4(x8)25 2 6 1 2 (23x)(4x5) 3(3x9)197 7 7 x 1 x 0.7x0.68.10.1x3 4 6 8 1 9x3x 4(x1)5(x9)147 6 1 1 (6x6)x3 9x3(9x)56 5 y1 y1 3 3x1(x5)45 3 5 1 2 (53x)(5x5) 7(2x4)159 5 5 x 1 x 0.6x0.92.60.2x9 4 6 4 1 3

2、x8x 3(x5)7(x9)59 6 1 2 (2x1)x9 4x7(8x)84 5 y2 y1 3 1.5x9.5(x4)5 3 5 1 2 (32x)(4x5) 3(5x6)196 9 5 x 1 x 0.1x0.73.39.6x3 2 6 4 1 6x5x 2(x6)7(x1)37 5 1 4 (9x5)x3 6x5(15x)15 5 y2 y1 2 5x10(x9)45 4 5 1 2 (24x)(3x3) 3(8x1)146 5 5 x 1 x 0.4x0.22.43.4x9 8 6 2 1 9x4x 5(x2)7(x9)183 8 1 3 (2x3)x6 9x7(20x)37 5

3、y1 y1 7 0.5x1.5(x2)25 2 5 1 2 (53x)(4x4) 3(3x9)88 5 5 x 1 x 0.2x0.51.56.2x9 6 6 4 1 9x2x 2(x1)8(x5)149 4 1 1 (7x2)x5 7x8(17x)35 5 y1 y2 1 2x9(x6)25 4 5 1 2 (24x)(4x3) 2(8x9)96 9 5 x 1 x 0.9x0.33.58.9x6 4 3 8 1 7x4x 9(x6)4(x5)77 7 1 4 (8x4)x9 9x5(5x)14 5 y1 y3 4 1.5x8.5(x5)25 3 6 1 2 (33x)(5x1) 3(5x9

4、)167 5 7 x 1 x 0.5x0.57.26.6x6 4 9 4 1 9x3x 7(x7)4(x6)129 6 1 1 (6x7)x8 8x4(3x)67 5 y1 y3 5 0.5x9.5(x3)25 2 6 1 2 (14x)(4x5) 8(9x4)16 9 5 x 1 x 0.2x0.50.49.1x9 2 3 4 1 4x6x 7(x2)3(x6)117 8 1 3 (6x3)x9 6x4(18x)79 5 y2 y2 9 5x5.5(x6)5 3 5 1 2 (33x)(3x4) 4(4x4)64 5 7 x 1 x 0.9x0.85.82x9 2 6 2 1 7x8x 2(

5、x8)7(x8)69 9 1 4 (8x9)x4 6x2(17x)76 5 y3 y1 4 3x5(x8)35 3 6 1 2 (12x)(2x2) 7(2x7)107 5 7 x 1 x 0.5x0.17.61.8x3 8 9 4 1 4x4x 6(x8)6(x2)189 2 1 2 (9x8)x3 3x4(16x)39 5 y2 y2 9 3x9.5(x6)5 2 6 1 2 (44x)(4x2) 8(2x9)152 5 7 x 1 x 0.7x0.58.81.5x3 2 6 8 1 8x8x 5(x6)4(x5)13 3 1 4 (9x7)x7 9x6(17x)74 5 y2 y2 7

6、2x8(x7)15 4 6 1 2 (23x)(5x4) 9(8x2)125 3 7 x 1 x 0.6x0.90.71.6x3 8 6 2 1 7x6x 4(x5)9(x7)57 3 1 3 (9x8)x5 8x8(14x)22 5 y3 y2 9 5x7.5(x5)25 4 6 1 2 (24x)(3x3) 4(4x6)179 9 7 x 1 x 0.2x0.61.65.2x9 2 9 2 1 4x6x 8(x5)8(x6)83 9 1 4 (4x9)x6 7x3(11x)49 5 y3 y3 4 1.5x7.5(x4)20 2 5 1 2 (43x)(5x1) 7(7x9)117 9 7 x 1 x 0.4x0.23.75.8x9 4 9 8 1 5x2x 9(x2)4(x8)75 2 1 3 (9x6)x5 9x6(16x)58 5 y2 y2 5 0.5x1(x5)10 4 6 1 2 (32x)(4x4) 9(4x3)149 3 7 x 1 x 0.7x0.36.81x6 4 9 2 1 7x2x 9(x1)2(x6)77 6 1 4 (2x1)x6 7x2(19x)76 5 y1 y1 5 0.5x9.5(x8)15 2 5 1 2 (34x)(3x1) 2(6x1)39 3