初中数学解二元一次方程组专项练习题 45.docx

1、初中数学解二元一次方程组专项练习题 45 5a4b6 x4y3 a6b8 3x8y14 5x4y 179 3m4b22 5y7x 179 -3m4b19 8a3b16 8x7y7 7a b4 3x4y2 9x3y 102 0.8x0.4y0.9 5y5x 102 0.3x0.4y3 4a8b3 7x4y8 8a2b18 6x2y13 8x8y 120 4m9b28 7y5x 120 -9m7b3 8a7b15 8x y-4 a5b6 2x3y-6 9x4y 67 0.2x0.8y1.1 6y7x 67 0.3x0.6y3.7 9a9b7 7x3y13 4a2b10 9x2y10 5x y 9

2、8m3b25 9y6x 9 -8m b17 a2b3 7x6y1 2a5b14 5x3y-4 2x5y 92 0.4x0.1y3.2 2y4x 92 0.7x0.4y0.4 6a8b19 5x y20 a5b6 7x3y15 8x y 151 9m3b0 6y x 151 -7m6b11 4a2b12 3x7y3 4a2b19 2x8y3 7x4y 170 0.1x0.1y3 3y5x 170 0.9x0.2y1.7 a3b15 6x y12 4a5b2 x y20 x5y 171 3m5b26 3y7x 171 -1m6b23 4a4b10 9x y-3 a b16 6x9y2 6x4y 1

3、4 0.6x0.3y1.1 5y2x 14 0.2x0.8y3.5 5a6b5 9x5y3 7a4b5 5x5y7 5x4y 35 5m8b2 y2x 35 -1m2b21 6a6b8 9x y-7 8a b8 9x2y2 7x6y -7 0.8x0.7y3.2 7y6x -7 0.5x0.5y1.9 a3b19 4x6y16 a8b1 8x9y3 x2y 160 3m5b28 6y2x 160 -3m9b23 a b4 x5y-8 2a4b8 5x8y4 5x8y 6 0.9x0.2y2 9y9x 6 0.4x0.2y3.4 2a6b10 3x4y15 3a3b16 6x y20 6x y 172 2m b30 7y3x 172 -2m8b4 8a9b14 x7y-4 4a8b17 4x9y3 7x6y 176 0.8x0.3y1.4 6y2x 176 0.4x0.9y0.3 7a8b1 2x5y7 7a5b2 4x5y16 6x7y 98 m3b2 4y5x 98 -8m b23 4a4b18 x4y2 9a6b14 3x5y2 4x2y 168 0.4x0.9y1.9 6y4x 168 0.1x0.7y1