初二数学二元一次方程组专项练习题 122.docx

1、初二数学二元一次方程组专项练习题 122 6a6b12 6x8y8 8a8b4 8x8y10 6x3y 148 3m3b28 2y3x 148 -5m9b11 9a9b20 9x5y-6 5a b15 2x3y4 4x9y 71 0.2x0.9y2.1 2y2x 71 0.9x0.8y0.2 4a8b7 8x5y10 7a2b12 2x7y11 3x y 188 4m b30 6y x 188 -4m7b15 6a5b2 8x2y1 6a b1 2x2y4 3x3y 75 0.7x0.6y1.2 8y9x 75 0.3x0.6y1.3 4a8b8 3x3y4 2a2b19 8x y9 9x y

2、 105 8m8b30 6y x 105 -5m7b5 3a b4 9x4y-3 9a2b18 4x8y-5 5x4y 153 0.7x0.8y3.2 7y7x 153 0.5x0.8y2.7 a7b8 9x7y5 4a2b19 7x6y10 4x y 102 5m4b13 5y5x 102 -10m6b22 2a8b3 x4y7 5a2b8 9x2y-10 6x y 135 0.1x0.6y1.7 y5x 135 0.4x0.4y0.5 a4b15 9x5y6 6a6b18 7x7y15 8x2y 60 5m4b12 6y3x 60 -1m9b10 2a9b19 7x y10 6a2b9 4

3、x4y8 x7y 136 0.6x0.2y3.4 2y2x 136 0.6x0.8y2.3 2a8b20 5x9y2 7a b20 x y3 8x9y 29 m8b30 4y7x 29 -5m6b12 2a2b17 4x y-2 9a b11 7x5y10 6x y 148 0.2x0.9y3.7 9y9x 148 0.2x0.6y0.9 6a9b18 x3y11 4a9b15 x8y18 8x3y 143 m6b19 2y5x 143 -1m9b8 5a7b3 9x4y-4 5a5b7 6x3y-3 9x2y 94 0.7x0.1y2.3 8y7x 94 0.3x0.8y0.8 5a5b15 5x y3 4a2b6 7x6y3 2x y 23 5m3b5 7y6x 23 -10m7b10 6a3b20 2x4y-4 3a8b13 6x9y-2 7x5y 66 0.4x0.7y2 8y5x 66 0.9x0.6y1.3 5a4b17 3x6y15 6a6b14 9x7y10 4x6y 21 6m5b23 9y4x 21 -2m5b15 3a3b8 5x4y1 3a8b3 4x4y-7 2x5y 144 0.5x0.9y3.6 2y9x 144 0.1x0.6y2.7