七年级数学上册解方程专项练习题61.docx

1、七年级数学上册解方程专项练习题617 x 1 x 0.3x0.511.4x3 6 3 4 1 6x5x 8(x4)6(x3)199 2 1 2 (3x6)x5 5x9(13x)96 5 y2 y2 6 2x10(x5)15 2 5 1 2 (33x)(5x2) 5(3x6)44 5 5 x 1 x 0.5x0.59.73.3x9 2 3 2 1 4x4x 7(x4)9(x3)57 2 1 1 (8x1)x7 4x2(7x)28 5 y2 y3 6 3x8(x4)30 3 6 1 2 (33x)(5x4) 4(6x3)105 3 5 x 1 x 0.9x0.75.55.3x9 2 3 4 1 8

2、x5x 4(x3)4(x4)173 9 1 1 (6x3)x4 5x8(14x)88 5 y2 y1 7 3x2(x5)50 2 5 1 2 (23x)(5x1) 2(9x7)107 5 7 x 1 x 0.7x0.77.83.8x6 8 9 8 1 2x5x 4(x1)6(x4)193 8 1 4 (7x7)x7 4x3(6x)37 5 y1 y3 1 4x5(x3)5 3 5 1 2 (33x)(5x3) 8(3x9)17 5 5 x 1 x 0.9x0.58.19.4x6 2 3 8 1 4x1x 5(x1)4(x7)63 7 1 3 (3x9)x7 2x3(1x)24 5 y2 y2

3、7 2.5x3.5(x8)30 3 6 1 2 (54x)(4x4) 3(7x9)162 9 5 x 1 x 0.1x0.57.76.1x9 2 6 4 1 7x9x 2(x3)9(x5)57 8 1 2 (6x2)x6 4x8(9x)25 5 y1 y1 4 1x4(x5)25 4 6 1 2 (42x)(5x1) 9(3x3)182 9 5 x 1 x 0.7x0.18.64.4x3 6 3 2 1 3x1x 5(x9)9(x4)165 9 1 4 (9x4)x5 3x6(3x)65 5 y1 y1 2 1.5x10(x7)20 3 6 1 2 (53x)(4x3) 2(3x5)166 9

4、 7 x 1 x 0.6x0.13.36x6 6 9 8 1 2x8x 9(x1)6(x9)183 6 1 3 (5x5)x1 9x5(15x)13 5 y1 y1 1 2x4(x1)15 3 6 1 2 (33x)(2x5) 4(9x6)39 7 5 x 1 x 0.2x0.88.67.1x9 8 9 2 1 4x2x 6(x5)2(x8)173 9 1 3 (8x2)x6 4x7(5x)63 5 y2 y2 3 2x4.5(x9)15 2 5 1 2 (53x)(2x1) 7(8x6)63 9 7 x 1 x 0.4x0.73.36x3 6 9 4 1 2x5x 7(x6)5(x8)179

5、 5 1 4 (2x1)x9 6x8(15x)52 5 y2 y1 5 5x1(x5)50 4 5 1 2 (24x)(3x2) 4(6x4)162 5 5 x 1 x 0.4x0.89.65x9 8 6 2 1 4x3x 3(x2)7(x2)159 3 1 3 (3x9)x8 4x4(6x)38 5 y2 y3 8 2.5x1(x5)45 3 6 1 2 (42x)(5x2) 7(8x8)55 3 7 x 1 x 0.6x0.42.67x6 2 3 8 1 5x9x 4(x8)5(x3)87 6 1 2 (3x5)x6 7x7(7x)66 5 y3 y2 5 2x1(x2)45 3 5 1

6、2 (52x)(4x2) 4(6x1)46 5 7 x 1 x 0.9x0.78.42.1x3 8 9 8 1 6x5x 6(x5)6(x4)105 3 1 3 (2x4)x6 4x2(11x)27 5 y1 y2 4 2x4.5(x8)25 2 5 1 2 (34x)(2x4) 6(2x1)49 3 7 x 1 x 0.1x0.36.56.5x3 6 3 2 1 9x9x 5(x3)6(x8)137 5 1 1 (8x5)x3 8x2(16x)28 5 y3 y1 4 3x1.5(x3)5 2 6 1 2 (52x)(2x5) 7(7x7)66 5 7 x 1 x 0.5x0.97.97.4x9 6 6 2 1 2x1x 8(x7)7(x3)207 8 1 3 (4x4)x2 3x8(5x)68 5 y3 y2 8 4x1(x1)20 4 5 1 2 (14x)(4x4) 5(4x1)49 9