1、初中数学解二元一次方程组专项练习题 16 4a2b10 6x7y7 9a6b1 5x6y11 2x4y 54 7m5b9 7y5x 54 -1m3b20 5a b2 3x9y5 9a7b1 2x2y1 3x5y 92 0.5x0.6y3.9 3y5x 92 0.4x0.8y4 8a9b13 6x4y14 8a4b20 2x9y11 x6y 39 3m5b24 3y x 39 -8m b6 3a9b16 8x3y8 6a4b4 3x2y-7 7x2y -7 0.3x0.1y2.2 8y x -7 0.3x0.2y2.4 9a8b11 4x3y6 4a5b16 6x2y3 6x2y 171 5m4
2、b10 y6x 171 -8m3b8 9a8b20 9x3y-1 2a2b15 3x8y8 6x3y 158 0.9x0.8y0.7 8y5x 158 0.6x0.4y0.5 6a5b4 2x3y13 2a5b11 2x3y3 2x5y 70 9m5b19 3y6x 70 -8m5b27 8a4b16 x6y10 2a b12 6x5y3 4x7y 170 0.7x0.7y3.7 5y x 170 0.4x0.4y2.4 6a2b3 4x9y4 2a3b20 x9y1 8x4y 192 9m6b8 y6x 192 -2m3b22 8a5b9 7x y-2 7a7b15 2x5y9 8x2y 1
3、28 0.8x0.3y0.5 5y2x 128 0.3x0.8y3.4 8a8b17 7x8y6 2a8b16 4x3y3 9x5y 181 7m5b8 4y5x 181 -9m6b14 7a b9 9x5y7 6a6b5 x6y-6 7x9y 17 0.6x0.4y2.3 6y4x 17 0.3x0.4y0.3 7a b4 6x3y1 2a2b20 4x6y20 8x7y 159 6m6b17 7y x 159 -9m7b2 6a5b11 5x3y9 a8b6 7x5y-2 4x2y 44 0.2x0.2y2.7 y x 44 0.4x0.7y3.7 6a2b18 4x9y20 a4b20 3x4y3 3x3y 46 4m7b21 7y4x 46 -5m4b30 5a b18 6x3y-7 7a4b8 3x5y2 8x8y 140 0.2x0.3y1.4 8y5x 140 0.9x0.2y3 8a4b5 x4y11 3a5b16 6x y9 9x4y 61 2m b15 2y7x 61 -7m2b22 9a7b15 3x y6 9a7b5 2x8y-7 3x8y 77 0.3x0.5y0.1 8y7x 77 0.2x0.5y0.8