1、二元一次方程组专项练习题72 3a6b15 5x5y16 2a4b20 7x5y2 2x7y 154 4m6b18 4y4x 154 -9m2b18 9a2b17 3x2y-5 9a2b20 4x y-2 6x y 49 0.4x0.5y4 8y3x 49 0.4x0.4y2.1 a6b14 x6y7 8a7b15 2x8y20 x4y 33 5m4b11 9y6x 33 -8m7b10 5a9b18 2x9y-3 4a3b1 7x6y-7 7x7y 113 0.2x0.2y0.7 4y4x 113 0.3x0.6y2.5 5a9b4 3x2y18 5a5b1 x5y19 8x3y -1 m7
2、b2 8y x -1 -7m4b24 3a9b5 6x3y4 2a9b2 2x6y-1 7x2y 64 0.9x0.9y3 3y9x 64 0.2x0.4y0.3 6a7b10 9x5y10 3a4b4 x7y18 9x3y 157 m6b21 7y9x 157 -6m3b1 7a8b6 7x y3 8a5b2 8x9y-5 8x2y 12 0.1x0.3y1.6 9y4x 12 0.4x0.8y2.5 8a9b7 7x6y2 9a b13 5x7y15 2x5y 156 7m8b22 9y4x 156 -5m5b18 7a5b8 2x y-8 4a8b1 4x3y-8 5x y 145 0.
3、1x0.3y2.9 4y4x 145 0.3x0.6y4 2a9b9 4x5y6 2a5b14 9x5y17 2x5y 141 2m2b22 2y3x 141 -6m5b29 6a3b6 x y3 6a b10 9x4y6 9x7y 168 0.7x0.7y4 2y4x 168 0.1x0.2y1.4 2a5b8 4x5y14 6a6b11 6x8y8 8x5y -7 5m5b5 3y3x -7 -4m2b3 9a b1 x4y-4 2a7b19 7x7y-6 9x5y 102 0.4x0.8y1 3y8x 102 0.9x0.4y3.6 6a2b18 6x8y19 a5b13 x7y17 4
4、x3y 110 7m2b5 6y8x 110 -6m5b7 7a b17 5x5y7 8a9b12 8x7y4 9x9y 150 0.1x0.8y0.1 y9x 150 0.1x0.6y1 5a5b9 7x2y10 2a9b20 6x5y4 8x2y 0 m b30 9y4x 0 -1m4b18 6a3b13 2x4y6 4a8b19 x9y-3 7x8y 145 0.4x0.6y2.6 9y2x 145 0.7x0.2y1 9a5b6 5x9y13 8a9b20 7x7y11 7x2y 36 9m b16 7y2x 36 -9m2b5 3a7b11 x3y4 2a b17 x7y9 x7y
5、120 0.7x0.9y0.2 3y4x 120 0.4x0.3y2.1 7a4b15 x6y15 9a4b20 6x9y2 7x4y 170 5m8b28 7y4x 170 -6m3b10 6a6b8 6x5y-1 6a b20 7x5y8 7x9y 168 0.4x0.9y2.4 2y8x 168 0.8x0.8y1.7 2a4b15 4x7y18 4a7b3 6x2y12 9x3y 191 m4b19 2y x 191 -3m7b6 a2b16 6x7y-7 5a7b14 6x3y-9 8x7y 8 0.5x0.3y3.4 3y9x 8 0.7x0.2y1.4 6a b1 5x4y9 5
6、a6b7 9x8y20 x4y 108 m3b12 6y2x 108 -6m7b20 2a3b18 8x8y-4 4a7b11 7x2y-5 3x6y 132 0.9x0.3y2 y9x 132 0.9x0.4y1.3 5a9b6 x2y7 5a5b8 4x5y3 5x9y 158 3m4b15 2y8x 158 -10m3b4 a7b20 3x7y7 a b14 4x6y10 7x3y 79 0.7x0.7y2.5 4y7x 79 0.3x0.6y2.6 7a5b8 8x5y9 3a2b5 8x9y6 7x4y 99 9m6b10 y4x 99 -8m6b15 3a6b8 9x y-10 9a2b6 2x6y-10 4x5y 37 0.7x0.9y1.9 9y6x 37 0.1x0.1y2.3
