初中数学解二元一次方程组专项练习题 90.docx

1、初中数学解二元一次方程组专项练习题 90 6a5b2 7x7y4 2a8b3 6x y3 8x5y 156 3m4b16 7y4x 156 -3m9b9 3a5b16 9x9y8 2a8b9 3x8y1 7x8y 155 0.1x0.1y1.8 8y4x 155 0.9x0.6y1 a9b7 8x6y20 8a7b5 3x6y4 x5y 185 4m b6 6y7x 185 -5m5b15 a7b18 5x4y-6 a8b2 2x7y7 9x9y 137 0.6x0.6y0.5 y3x 137 0.5x0.5y2.1 5a7b19 5x2y7 7a7b1 7x6y16 6x5y 1 5m6b1

2、0 8y5x 1 -1m3b2 3a6b6 x5y10 6a b13 8x5y-3 4x9y 49 0.6x0.6y1 7y3x 49 0.9x0.9y2.2 3a b15 3x8y20 9a5b1 8x3y13 8x4y 157 m2b10 4y3x 157 -6m6b24 4a2b8 9x4y-4 3a2b7 9x2y-8 4x2y 129 0.8x0.8y2.3 8y7x 129 0.5x0.4y0.4 4a7b20 7x5y19 2a9b8 8x2y20 8x y 135 9m4b15 8y2x 135 -8m7b20 6a b19 x6y-7 8a7b1 4x6y-3 3x9y 10

3、0 0.9x0.7y2.5 9y4x 100 0.2x0.7y1.8 7a2b8 x8y8 6a9b13 x2y14 2x3y 164 6m7b2 9y3x 164 -8m4b24 7a b20 2x5y-8 a9b7 8x3y-10 5x4y 177 0.9x0.7y3.7 8y5x 177 0.7x0.4y1 9a5b11 6x9y20 8a6b14 5x6y20 x2y 49 3m3b10 y5x 49 -8m6b27 6a8b3 6x7y10 7a5b8 3x9y1 9x9y 115 0.8x0.9y1.6 6y3x 115 0.2x0.1y1.4 2a9b10 2x2y7 9a b3 4x y19 4x3y 174 m3b16 9y2x 174 -10m9b22 9a9b13 3x5y-9 6a4b10 8x2y-1 3x3y 8 0.7x0.8y1 6y4x 8 0.7x0.4y0.9 a8b9 5x9y16 5a b20 3x9y16 3x9y 145 8m6b9 4y6x 145 -7m2b24 6a b17 5x y3 6a9b1 3x4y-6 2x8y 145 0.9x0.8y0.6 2y x 145 0.8x0.5y2.5