初二数学二元一次方程组专项练习题 86.docx

1、初二数学二元一次方程组专项练习题 86 8a5b16 9x8y15 9a8b11 8x y16 7x5y 157 7m8b15 2y8x 157 -7m5b11 a4b10 x5y3 2a4b7 6x5y1 5x7y 38 0.4x0.3y0.6 2y2x 38 0.3x0.1y3.4 a7b8 5x8y20 3a9b10 8x5y10 3x2y 156 3m8b16 4y2x 156 -4m4b26 9a6b9 x9y7 6a8b4 7x9y-9 6x y 178 0.7x0.1y3.3 4y9x 178 0.4x0.2y3.4 2a4b17 x3y9 8a8b17 6x5y5 2x8y 1

2、48 m3b30 6y2x 148 -5m5b24 3a3b13 9x3y-2 6a4b12 x2y1 9x4y 180 0.5x0.3y2.6 8y9x 180 0.8x0.8y2.6 a5b4 9x9y17 9a6b9 3x3y2 x7y 162 6m4b18 2y3x 162 -3m7b9 7a5b8 9x4y-7 5a7b2 3x8y-5 7x y 153 0.7x0.6y0.6 3y8x 153 0.2x0.3y0.5 3a2b9 5x9y8 a b14 7x4y1 2x5y 75 5m2b0 y8x 75 -3m3b27 8a2b4 7x2y-4 4a3b11 2x2y-10 8x

3、 y 162 0.5x0.4y2.6 5y3x 162 0.1x0.3y3.6 4a2b7 x6y11 3a b9 x2y11 7x4y 198 m5b29 7y3x 198 -9m6b12 5a2b13 6x8y-10 3a4b4 2x9y-7 5x5y 5 0.6x0.5y3 7y x 5 0.9x0.7y1.1 2a4b15 8x y5 6a8b12 7x3y8 6x y 164 4m b1 6y x 164 -3m9b13 9a3b19 2x5y10 a2b9 4x2y5 3x9y 12 0.8x0.8y2 8y2x 12 0.6x0.3y1.8 4a9b19 4x7y12 7a2b2 3x4y14 5x5y 81 2m7b6 3y7x 81 -1m3b9 7a2b19 9x4y-7 a4b15 5x9y-6 5x8y 95 0.9x0.8y3.8 2y6x 95 0.5x0.8y2.9 9a2b1 4x4y14 9a9b10 4x y11 7x5y 118 9m8b22 5y3x 118 -1m9b21 2a2b2 4x9y4 8a3b14 5x y6 x3y 47 0.6x0.6y0.1 6y2x 47 0.9x0.9y1