1、二元一次方程组专项练习题130 9a4b4 9x4y19 5a7b3 8x y3 8x y 14 7m b2 2y6x 14 -10m9b17 5a2b12 5x2y9 8a b14 3x2y-8 5x5y 162 0.5x0.2y0.6 6y4x 162 0.5x0.1y0.2 2a4b20 9x9y4 6a2b18 3x9y12 9x5y 92 7m9b12 4y2x 92 -3m6b3 2a4b8 4x6y-6 7a3b15 9x9y5 2x6y 46 0.7x0.5y4 6y8x 46 0.8x0.3y0.8 4a7b13 4x4y6 a b16 9x7y4 3x7y 24 m5b29
2、 2y6x 24 -3m3b0 3a8b9 9x3y7 6a3b5 9x4y5 5x5y 141 0.1x0.3y2.2 8y3x 141 0.8x0.1y0.8 3a7b15 x9y8 3a5b4 8x y2 2x6y 60 7m3b26 7y x 60 -1m7b26 9a7b20 x6y-5 5a6b20 7x9y-4 5x3y 51 0.8x0.2y3 4y4x 51 0.2x0.6y2.4 8a9b16 2x3y7 5a7b10 3x4y2 6x4y 23 9m8b12 7y5x 23 -9m8b27 7a5b2 7x y-5 6a7b20 5x9y-5 9x6y 142 0.5x0
3、.3y2.9 7y8x 142 0.1x0.9y0.7 9a3b2 8x9y8 9a5b14 2x9y7 9x y 93 2m6b14 9y x 93 -1m3b6 4a6b3 5x4y-3 2a4b5 7x3y2 5x5y 80 0.8x0.7y3.6 4y x 80 0.4x0.4y0.3 4a6b13 x3y14 2a3b8 2x6y14 9x4y 165 4m5b15 3y4x 165 -7m7b24 7a8b2 5x6y10 7a6b5 x7y10 9x7y 56 0.7x0.4y4 9y7x 56 0.8x0.3y3.5 3a6b18 6x4y19 4a6b6 4x9y10 9x3
4、y 58 3m2b17 4y x 58 -1m7b28 5a6b13 x3y-10 4a6b19 5x5y6 3x2y 40 0.8x0.1y2.1 9y x 40 0.4x0.8y2.9 8a3b10 9x y8 3a2b8 7x3y14 6x2y 142 8m6b17 4y5x 142 -2m5b3 3a2b7 3x y-9 2a2b1 7x4y-3 2x9y 58 0.2x0.5y3.7 3y7x 58 0.4x0.2y2.4 6a2b20 6x4y3 7a6b5 7x5y12 2x7y 25 m4b13 8y6x 25 -8m9b9 9a5b17 5x6y9 7a5b8 7x7y10
5、8x4y 60 0.9x0.2y2.1 3y2x 60 0.4x0.3y3.8 7a9b20 3x2y6 8a3b4 9x8y7 6x5y 163 7m9b1 3y2x 163 -9m9b6 a7b11 6x y7 3a8b9 7x6y-9 3x y 47 0.5x0.9y2.8 8y7x 47 0.8x0.9y3.7 4a4b15 x4y16 6a9b5 7x9y4 7x3y 105 m5b20 5y3x 105 -7m7b14 5a b20 7x9y-3 3a4b10 3x8y1 4x2y 17 0.3x0.5y3.8 y2x 17 0.9x0.6y1.9 3a8b20 8x9y12 5a
6、4b3 5x y14 6x9y 127 5m7b27 7y6x 127 -7m7b1 2a8b5 8x6y7 7a5b19 9x9y1 4x8y 139 0.5x0.3y3.4 3y3x 139 0.1x0.1y2.4 4a2b12 9x5y2 9a3b4 5x6y4 5x2y 42 8m2b17 y2x 42 -2m9b0 a b19 3x2y5 9a3b2 x3y1 7x6y 63 0.4x0.4y3.3 9y5x 63 0.1x0.9y3.1 2a5b11 2x7y4 8a3b4 x9y10 2x2y 174 7m8b29 5y4x 174 -7m2b6 9a9b2 6x8y8 5a3b13 4x4y9 9x9y 5 0.8x0.1y1.7 3y6x 5 0.6x0.4y3.9
