1、初一数学上册解方程专项练习题445 x 1 x 0.5x0.56.83x6 2 9 2 1 8x5x 5(x9)8(x1)193 9 1 1 (8x2)x8 8x7(18x)43 5 y2 y1 3 1.5x3.5(x5)35 4 6 1 2 (33x)(2x4) 9(6x5)36 7 7 x 1 x 0.8x0.24.26.8x6 2 3 2 1 2x5x 6(x2)3(x4)15 2 1 2 (5x9)x6 9x8(4x)39 5 y1 y1 1 1x10(x5)20 3 5 1 2 (12x)(5x2) 6(4x2)193 7 7 x 1 x 0.2x0.74.59.4x6 2 3 4
2、1 3x6x 6(x4)2(x4)67 3 1 3 (3x8)x9 6x5(16x)72 5 y3 y2 9 2.5x6.5(x8)30 2 5 1 2 (33x)(2x5) 4(5x6)183 9 5 x 1 x 0.9x0.33.11.9x3 6 3 8 1 5x4x 2(x7)2(x1)27 4 1 1 (6x1)x6 2x9(6x)15 5 y1 y2 7 2x5.5(x2)40 2 5 1 2 (33x)(3x3) 8(2x7)67 5 5 x 1 x 0.8x0.829.2x3 2 9 8 1 9x9x 4(x5)9(x7)47 7 1 3 (5x5)x3 7x6(3x)27 5
3、y1 y1 9 4x5.5(x7)30 2 6 1 2 (14x)(3x5) 8(6x9)164 7 5 x 1 x 0.4x0.22.81.6x3 6 3 2 1 5x1x 4(x1)6(x6)65 2 1 4 (3x1)x6 9x7(2x)46 5 y2 y3 8 0.5x9(x4)50 4 5 1 2 (54x)(5x2) 6(3x8)198 9 5 x 1 x 0.4x0.88.15.1x9 8 3 2 1 9x4x 2(x4)2(x7)153 9 1 3 (5x6)x9 5x6(10x)18 5 y2 y3 2 1x4.5(x7)20 3 6 1 2 (54x)(4x1) 5(3x6
4、)148 7 5 x 1 x 0.7x0.91.63.6x6 8 9 2 1 9x2x 6(x6)7(x7)109 5 1 2 (5x2)x9 5x3(3x)73 5 y3 y2 2 3x10(x7)5 4 6 1 2 (13x)(5x3) 5(7x1)133 3 5 x 1 x 0.8x0.87.83.6x3 2 3 2 1 4x9x 6(x8)2(x8)87 9 1 3 (8x2)x8 9x5(11x)34 5 y2 y2 9 3x4.5(x7)50 2 5 1 2 (53x)(4x4) 5(7x6)47 7 5 x 1 x 0.2x0.60.41.5x6 2 6 4 1 2x9x 8(x
5、6)7(x6)57 2 1 3 (3x6)x9 7x6(1x)53 5 y1 y3 4 0.5x4.5(x4)45 4 6 1 2 (24x)(5x2) 4(4x5)105 3 5 x 1 x 0.5x0.23.15.6x9 6 9 4 1 5x6x 5(x3)3(x6)75 4 1 3 (6x9)x9 5x8(17x)72 5 y1 y3 8 2.5x8(x6)45 2 6 1 2 (23x)(2x4) 4(9x3)202 9 5 x 1 x 0.4x0.74.28.7x3 8 3 4 1 7x2x 4(x5)5(x9)45 2 1 1 (8x9)x3 6x8(14x)36 5 y2 y3
6、9 3x7.5(x6)5 4 5 1 2 (53x)(5x2) 7(4x9)55 9 7 x 1 x 0.2x0.561x9 2 9 2 1 2x1x 9(x9)4(x2)67 9 1 2 (9x5)x4 6x3(11x)46 5 y2 y1 1 4x1.5(x1)10 2 5 1 2 (42x)(5x4) 2(7x1)86 7 7 x 1 x 0.8x0.70.18.5x6 2 9 2 1 4x8x 7(x8)6(x4)69 5 1 2 (2x8)x1 9x4(14x)23 5 y3 y2 8 3x8.5(x5)5 2 6 1 2 (33x)(2x2) 7(4x2)139 5 7 x 1 x 0.1x0.18.96.7x6 6 6 2 1 5x9x 3(x1)9(x3)209 2 1 3 (8x8)x5 5x2(8x)88 5 y2 y2 6 2.5x2(x8)50 2 6 1 2 (12x)(2x2) 6(3x5)174 7 7 x 1 x 0.3x0.76.35.7x6 2 9 4 1 5x2x 6(x2)3(x2)115 4 1 2 (7x9)x3 3x8(20x)45 5 y2 y2 2 3x1(x4)45 3 6 1 2 (52x)(5x1) 9(7x5)43 5
