七年级数学上册解方程专项练习题52.docx

1、七年级数学上册解方程专项练习题527 x 1 x 0.4x0.50.25.4x3 8 3 8 1 5x2x 8(x2)5(x4)175 3 1 3 (5x6)x6 3x2(6x)58 5 y2 y3 3 4x1(x2)45 4 5 1 2 (23x)(4x5) 7(6x5)66 9 7 x 1 x 0.1x0.55.54.5x3 6 6 4 1 3x7x 9(x2)6(x1)53 7 1 2 (9x3)x3 4x7(11x)93 5 y3 y3 3 0.5x10(x1)35 2 5 1 2 (14x)(2x4) 6(6x6)59 5 7 x 1 x 0.2x0.95.85.9x6 4 3 2

2、1 2x9x 7(x1)5(x3)143 2 1 3 (8x1)x6 3x3(20x)33 5 y1 y2 5 1.5x9.5(x2)10 2 5 1 2 (24x)(2x1) 6(2x1)128 5 5 x 1 x 0.4x0.244.3x6 8 3 8 1 7x3x 9(x8)3(x4)117 2 1 3 (9x2)x2 3x2(5x)53 5 y3 y2 8 4.5x5(x6)5 3 6 1 2 (12x)(5x4) 9(3x9)93 5 7 x 1 x 0.1x0.975.3x3 4 9 4 1 7x2x 4(x3)8(x7)99 8 1 3 (9x7)x9 7x4(9x)95 5 y

3、3 y2 9 1x6(x5)15 4 5 1 2 (33x)(4x4) 7(3x1)98 7 7 x 1 x 0.6x0.52.33x6 2 6 4 1 6x5x 9(x6)7(x7)105 4 1 3 (4x9)x6 8x4(3x)66 5 y1 y1 1 1.5x7.5(x6)50 2 5 1 2 (43x)(2x4) 9(2x4)163 3 5 x 1 x 0.5x0.73.20.7x9 2 6 8 1 2x6x 8(x5)9(x6)53 2 1 1 (8x5)x4 7x3(2x)69 5 y3 y3 6 4.5x4(x1)35 4 5 1 2 (43x)(2x1) 9(3x7)179

4、9 5 x 1 x 0.5x0.38.69.8x3 8 6 4 1 8x6x 2(x6)3(x6)177 9 1 3 (4x4)x5 8x9(17x)88 5 y1 y2 2 2x10(x5)20 3 6 1 2 (52x)(2x2) 3(2x4)178 5 7 x 1 x 0.2x0.21.90.8x3 2 6 8 1 7x6x 2(x3)6(x6)195 2 1 4 (4x9)x4 5x4(18x)33 5 y2 y1 4 4x7.5(x4)50 4 6 1 2 (22x)(3x5) 4(7x1)113 3 7 x 1 x 0.6x0.37.94.5x3 8 6 4 1 2x3x 9(x2

5、)3(x4)83 5 1 4 (2x1)x5 7x6(19x)47 5 y3 y2 6 1.5x7(x4)40 4 5 1 2 (52x)(2x5) 8(9x7)115 9 7 x 1 x 0.9x0.13.83.4x6 6 9 2 1 9x8x 4(x4)5(x4)79 4 1 4 (5x1)x4 4x3(12x)99 5 y2 y2 4 5x3.5(x7)50 2 6 1 2 (34x)(2x3) 5(7x3)157 9 5 x 1 x 0.6x0.64.58.4x9 8 3 8 1 4x1x 6(x3)4(x3)77 9 1 1 (3x7)x8 7x8(6x)44 5 y1 y1 2 2

6、x7(x6)10 3 6 1 2 (14x)(4x5) 9(3x9)163 3 7 x 1 x 0.4x0.18.61.1x9 4 6 2 1 5x8x 7(x2)4(x1)125 2 1 2 (8x8)x8 2x7(6x)13 5 y2 y3 4 2x2.5(x2)20 3 5 1 2 (14x)(5x3) 6(3x2)197 7 7 x 1 x 0.9x0.614.6x9 6 9 8 1 8x2x 7(x2)9(x3)43 7 1 2 (4x3)x7 5x6(20x)47 5 y2 y1 8 1.5x8(x9)10 3 6 1 2 (13x)(2x1) 5(5x1)158 7 7 x 1 x 0.7x0.13.83.8x9 8 6 8 1 4x2x 9(x8)2(x7)119 4 1 2 (4x4)x3 9x7(4x)26 5 y1 y1 5 2.5x2.5(x7)35 3 6 1 2 (33x)(2x3) 8(4x9)157 9