七年级数学上册一元一次方程专项练习题11.docx

1、七年级数学上册一元一次方程专项练习题117 x 1 x 0.2x0.62.85.6x3 4 9 2 1 3x9x 3(x6)4(x6)143 4 1 3 (9x7)x6 7x9(11x)36 5 y3 y1 5 0.5x1.5(x3)5 4 5 1 2 (54x)(3x2) 4(4x8)206 5 7 x 1 x 0.3x0.93.31.1x9 8 3 4 1 5x6x 7(x8)4(x3)93 5 1 3 (7x3)x7 8x3(12x)77 5 y3 y2 2 2.5x10(x3)15 4 6 1 2 (12x)(5x4) 9(5x1)47 3 5 x 1 x 0.8x0.615.9x6

2、2 3 8 1 6x3x 8(x2)7(x6)167 2 1 3 (5x4)x2 7x7(4x)44 5 y3 y3 5 4x9.5(x7)10 3 6 1 2 (53x)(3x4) 4(5x3)162 3 5 x 1 x 0.4x0.24.79.2x3 6 9 8 1 9x1x 3(x8)7(x2)59 9 1 4 (7x8)x5 3x7(17x)54 5 y2 y1 8 3x2.5(x3)40 2 5 1 2 (14x)(2x1) 7(3x1)173 7 7 x 1 x 0.5x0.992.3x9 6 9 8 1 6x9x 6(x1)4(x8)175 3 1 1 (2x3)x4 3x4(1

3、4x)74 5 y1 y3 6 0.5x4(x4)15 4 5 1 2 (53x)(3x1) 9(3x9)87 9 5 x 1 x 0.6x0.59.89.1x3 6 3 2 1 3x3x 6(x4)6(x3)207 6 1 2 (7x4)x8 3x4(7x)77 5 y2 y3 3 4x9.5(x9)25 4 5 1 2 (54x)(3x4) 8(6x4)184 9 5 x 1 x 0.9x0.16.10.6x3 6 9 2 1 9x7x 3(x2)4(x3)157 6 1 1 (2x8)x6 4x2(6x)44 5 y3 y3 4 2.5x8.5(x5)45 3 6 1 2 (54x)(2

4、x3) 6(4x3)49 7 5 x 1 x 0.9x0.13.58.3x9 2 3 2 1 7x7x 9(x1)6(x2)205 6 1 1 (5x7)x8 7x4(19x)45 5 y2 y2 9 0.5x7.5(x6)30 4 5 1 2 (34x)(5x3) 8(2x2)35 9 5 x 1 x 0.1x0.58.70.7x9 6 9 2 1 8x5x 2(x9)7(x2)177 4 1 1 (7x2)x5 4x9(7x)68 5 y3 y3 7 4.5x3(x1)45 3 6 1 2 (34x)(4x4) 2(2x5)73 7 5 x 1 x 0.8x0.19.10.6x3 2 3 4 1 7x6x 4(x9)6(x9)79 6 1 1 (4x7)x1 5x2(11x)13 5 y2 y1 5 4.5x6.5(x1)30 2 5 1 2 (32x)(4x1) 4(9x5)108 9