七年级数学上册一元一次方程专项练习题41.docx

1、七年级数学上册一元一次方程专项练习题417 x 1 x 0.1x0.54.90.5x9 2 3 4 1 9x3x 3(x4)5(x6)167 2 1 3 (8x5)x6 9x4(17x)82 5 y3 y2 6 3x1(x4)50 3 6 1 2 (12x)(2x4) 5(4x2)173 5 5 x 1 x 0.8x0.40.24.8x3 2 6 4 1 7x8x 9(x3)6(x1)123 3 1 2 (7x4)x1 8x8(4x)84 5 y1 y1 4 0.5x8(x2)20 3 5 1 2 (33x)(5x1) 8(4x4)94 3 7 x 1 x 0.1x0.61.59.4x6 8

2、9 2 1 8x4x 4(x8)8(x3)93 5 1 4 (8x6)x6 3x7(7x)45 5 y2 y1 6 4x10(x6)20 4 5 1 2 (14x)(3x4) 3(7x5)206 9 7 x 1 x 0.9x0.20.70.1x6 8 6 2 1 9x5x 8(x9)5(x5)209 3 1 4 (7x9)x8 3x4(13x)69 5 y1 y3 4 1.5x3(x1)35 3 6 1 2 (13x)(5x4) 3(7x2)133 7 7 x 1 x 0.6x0.10.74.5x9 2 6 2 1 9x6x 5(x1)3(x7)135 4 1 4 (2x3)x8 3x4(10

3、x)84 5 y2 y2 8 4x6(x2)40 2 6 1 2 (54x)(4x1) 6(2x6)166 7 7 x 1 x 0.7x0.94.89.1x9 2 3 2 1 7x3x 9(x2)5(x6)175 2 1 3 (5x4)x6 4x2(20x)97 5 y1 y3 5 4.5x5.5(x7)30 2 5 1 2 (52x)(5x2) 2(7x1)19 9 7 x 1 x 0.8x0.51.80.5x6 4 6 4 1 8x2x 5(x7)5(x9)195 6 1 1 (9x5)x8 7x8(9x)43 5 y2 y2 3 3x1(x6)20 3 5 1 2 (23x)(5x2)

4、9(3x1)62 7 5 x 1 x 0.2x0.22.43.2x9 6 9 8 1 8x9x 3(x4)8(x9)109 6 1 4 (2x4)x1 5x2(8x)67 5 y3 y3 5 4.5x3(x4)40 4 6 1 2 (14x)(2x2) 9(7x8)14 9 5 x 1 x 0.7x0.98.43.7x9 6 9 2 1 7x1x 4(x5)4(x2)33 9 1 4 (4x4)x3 2x2(10x)93 5 y1 y1 6 1.5x7(x4)45 3 6 1 2 (23x)(5x3) 7(8x3)208 9 5 x 1 x 0.6x0.32.93.3x3 6 3 8 1 9x5x 6(x9)5(x5)99 7 1 2 (9x2)x1 8x3(11x)74 5 y1 y2 8 0.5x4.5(x6)50 2 6 1 2 (12x)(2x5) 5(9x7)57 5