1、二元一次方程组专项练习题111 7a b19 8x7y20 a b14 8x7y6 8x2y 27 5m5b9 7y7x 27 -3m5b3 a7b3 2x5y-2 9a9b20 5x3y8 5x5y 167 0.1x0.7y0.5 2y7x 167 0.6x0.2y3.3 5a8b12 3x9y17 7a2b12 9x5y19 6x8y 176 6m8b22 7y5x 176 -6m6b17 6a7b16 4x7y-2 2a6b20 7x8y-10 5x9y 112 0.7x0.1y3.6 y4x 112 0.7x0.5y3.8 a8b11 8x3y20 4a9b12 5x4y3 4x8y
2、84 7m b25 2y5x 84 -5m6b19 3a9b1 x5y0 3a9b14 x y0 x2y -1 0.6x0.3y1.9 9y6x -1 0.1x0.5y2.8 6a6b9 2x3y6 3a6b3 5x8y10 8x y 194 m8b1 y7x 194 -8m9b20 3a3b3 4x8y-8 7a4b3 5x5y9 6x5y 198 0.8x0.9y0.5 2y6x 198 0.6x0.6y2.5 3a5b2 6x y10 5a b7 5x6y7 5x2y 123 3m8b20 y2x 123 -9m2b24 2a5b14 3x y-6 2a2b16 7x9y1 2x3y 1
3、54 0.8x0.1y1 8y7x 154 0.7x0.3y2 a b3 3x7y14 7a5b17 8x5y8 7x2y 106 6m5b3 4y x 106 -2m5b13 4a9b17 9x3y-3 8a b5 2x8y-9 6x8y 160 0.8x0.9y0.3 4y3x 160 0.8x0.9y3 7a7b7 7x5y5 a2b8 7x7y3 5x y 150 7m3b13 y7x 150 -1m3b22 6a2b19 9x8y-9 8a7b7 9x y-1 6x7y 20 0.3x0.9y2 5y6x 20 0.4x0.5y3.4 4a4b11 3x2y10 8a6b1 6x7y
4、14 4x4y 30 4m8b20 8y6x 30 -4m5b21 5a7b18 x8y-6 9a5b18 5x9y4 9x8y 18 0.8x0.8y0.5 3y5x 18 0.9x0.7y2.1 2a2b19 3x3y7 9a9b13 6x2y3 5x9y 174 4m6b9 9y6x 174 -8m9b24 5a8b18 x4y-9 8a4b1 7x2y7 4x2y 103 0.1x0.8y3.9 8y5x 103 0.1x0.5y1.9 3a9b13 x5y11 2a8b2 8x y10 6x7y 140 m2b25 2y8x 140 -9m4b11 5a4b16 6x6y10 6a9
5、b12 8x4y3 2x3y 46 0.3x0.1y1.2 5y5x 46 0.4x0.6y1.6 6a5b5 5x2y17 7a3b6 6x9y10 x7y 171 4m5b15 9y2x 171 -8m4b0 8a3b10 9x8y4 a9b6 5x9y4 4x8y 73 0.1x0.3y3.1 7y8x 73 0.2x0.1y3.8 8a b14 3x2y2 2a3b12 8x6y5 8x6y 145 m8b8 4y5x 145 -2m6b10 2a b14 4x8y3 5a b10 3x8y6 3x4y 151 0.6x0.8y2.6 7y2x 151 0.6x0.8y1.9 2a4b
6、8 9x9y9 6a5b20 9x y2 3x5y 4 5m b27 3y3x 4 -1m8b3 4a7b1 5x4y-4 a9b2 3x9y10 2x y 171 0.2x0.5y0.1 7y3x 171 0.3x0.8y3.3 8a7b5 8x7y4 6a9b16 5x5y13 6x7y 5 5m4b21 y6x 5 -4m5b2 7a8b14 2x y4 a5b16 2x y-1 4x2y 110 0.2x0.3y1.9 9y6x 110 0.2x0.8y2.6 7a4b10 3x7y1 2a5b7 7x4y11 6x6y 198 6m4b27 9y8x 198 -8m3b29 8a5b13 9x6y-3 2a6b11 x3y5 9x y 93 0.9x0.8y3.3 2y5x 93 0.2x0.7y1.3
