七年级数学上册一元一次方程专项练习题62.docx

1、七年级数学上册一元一次方程专项练习题627 x 1 x 0.8x0.53.10.8x6 8 9 4 1 3x9x 7(x2)8(x8)87 6 1 4 (4x2)x1 7x3(11x)64 5 y3 y2 6 3x8.5(x4)20 4 5 1 2 (24x)(4x3) 4(5x4)193 7 5 x 1 x 0.4x0.91.87.1x9 8 9 8 1 3x1x 8(x2)3(x5)155 5 1 2 (3x9)x4 9x5(10x)79 5 y1 y1 1 5x7(x1)5 2 5 1 2 (23x)(5x1) 7(6x4)119 9 5 x 1 x 0.7x0.70.35.8x3 4

2、3 8 1 4x6x 6(x3)4(x6)153 7 1 3 (9x1)x7 6x6(15x)16 5 y1 y1 7 3x5.5(x3)30 4 6 1 2 (34x)(4x3) 7(4x3)183 3 5 x 1 x 0.5x0.43.81.7x6 4 3 8 1 5x8x 2(x6)5(x6)157 9 1 3 (7x9)x3 4x8(8x)69 5 y2 y1 4 4.5x4(x5)15 3 6 1 2 (14x)(3x4) 4(3x2)162 9 7 x 1 x 0.4x0.41.70.2x3 4 9 8 1 3x5x 4(x2)9(x8)65 7 1 4 (8x5)x8 5x8(1

3、6x)67 5 y1 y3 7 0.5x4.5(x2)35 3 6 1 2 (24x)(4x2) 4(3x2)96 5 7 x 1 x 0.3x0.98.35.8x6 4 3 4 1 4x6x 2(x2)9(x6)153 5 1 4 (9x5)x8 4x5(5x)37 5 y3 y2 8 3x4(x3)10 2 5 1 2 (32x)(3x4) 2(7x9)84 5 5 x 1 x 0.2x0.21.13.5x6 8 3 4 1 7x5x 5(x1)5(x6)33 6 1 1 (7x4)x6 5x9(9x)72 5 y3 y1 2 4x4(x7)25 3 6 1 2 (54x)(5x3) 6(

4、9x1)34 5 5 x 1 x 0.4x0.43.31.3x9 4 3 4 1 6x2x 5(x7)4(x6)23 9 1 2 (3x3)x4 9x8(1x)89 5 y3 y1 6 2x9.5(x7)10 3 5 1 2 (13x)(2x3) 3(2x8)39 5 7 x 1 x 0.4x0.648.2x6 6 3 4 1 4x7x 6(x8)7(x9)169 8 1 1 (7x5)x8 5x4(19x)68 5 y2 y3 1 1.5x0.5(x8)40 2 6 1 2 (22x)(4x4) 7(3x8)196 9 5 x 1 x 0.1x0.52.98.9x3 4 9 2 1 6x2x 8(x8)3(x7)205 7 1 4 (3x6)x1 9x6(7x)46 5 y3 y2 2 3.5x7(x4)10 3 6 1 2 (23x)(3x5) 8(3x2)55 3