1、二元一次方程组专项练习题6 7a8b5 9x7y19 9a8b6 3x5y13 8x6y -2 3m2b11 6y4x -2 -3m7b11 8a8b11 x7y-5 5a2b15 4x2y3 8x7y 58 0.3x0.4y1.5 7y9x 58 0.6x0.6y1.8 3a7b12 8x7y20 a8b8 x9y6 2x6y 53 5m9b30 2y4x 53 -3m4b23 8a8b14 4x6y-6 a7b9 7x9y-8 3x8y 2 0.2x0.4y0.9 6y7x 2 0.1x0.2y1.5 9a b10 4x9y4 2a7b9 3x8y11 7x2y 143 5m4b0 y4x
2、 143 -3m4b2 a5b13 7x9y-5 9a b14 x8y7 5x9y 200 0.3x0.1y3.1 9y5x 200 0.3x0.9y3 9a5b10 5x4y11 a6b19 4x5y9 5x6y 168 5m4b13 8y x 168 -9m6b24 3a4b1 2x9y7 5a6b3 3x9y-10 3x4y 170 0.9x0.4y2.8 5y5x 170 0.6x0.5y1.5 9a7b10 2x9y9 3a9b6 8x6y18 3x8y 177 6m7b9 2y7x 177 -8m8b26 7a3b10 x2y-7 9a3b7 6x6y8 5x6y 77 0.6x0
3、.1y2.7 6y4x 77 0.5x0.9y3.6 4a8b4 4x6y13 9a8b9 x5y16 4x y 11 6m2b12 4y7x 11 -4m3b21 7a b8 3x5y-2 2a3b20 2x5y0 x y 55 0.4x0.9y0.5 6y9x 55 0.6x0.1y0.7 8a7b14 6x3y1 3a b9 2x8y2 x9y 130 4m3b0 4y5x 130 -6m2b24 9a6b16 3x6y4 6a4b9 4x2y8 7x5y 91 0.3x0.3y0.5 9y5x 91 0.6x0.2y1.4 4a3b17 2x4y2 a5b11 9x4y11 2x6y
4、124 3m2b22 7y7x 124 -2m9b13 2a3b9 8x2y8 4a6b6 2x8y5 9x y 60 0.8x0.5y3.8 4y3x 60 0.3x0.4y3.1 a b11 6x6y11 4a7b12 2x4y12 9x5y 185 2m6b8 6y7x 185 -2m4b10 a b6 2x5y3 7a4b13 6x9y10 x3y 188 0.1x0.5y3.1 2y8x 188 0.2x0.3y1.2 9a b19 2x7y4 8a9b8 2x6y19 x2y 111 4m3b6 4y x 111 -8m8b29 5a8b14 2x8y10 4a8b3 4x8y-6
5、 4x9y 141 0.5x0.4y3.4 7y6x 141 0.7x0.9y0.3 3a8b8 2x y18 7a8b3 x y18 3x4y 125 2m2b24 5y4x 125 -1m6b5 2a4b20 5x4y1 9a b2 8x y-3 2x y 152 0.5x0.5y3.4 3y x 152 0.3x0.7y3.1 7a8b15 2x2y9 7a b14 6x y12 9x4y 58 3m7b17 9y5x 58 -4m3b14 2a6b9 2x y7 3a b5 2x4y-9 7x6y 162 0.9x0.2y0.5 4y4x 162 0.1x0.6y3 4a3b10 6x
6、5y18 2a b20 x5y19 9x8y 15 2m4b21 2y x 15 -6m7b9 2a5b11 7x y-3 7a9b15 6x6y7 9x5y 79 0.1x0.2y1.9 5y4x 79 0.2x0.3y0.4 9a7b8 5x2y9 6a8b12 5x9y11 6x7y 146 7m6b24 7y6x 146 -8m3b21 4a9b12 3x6y1 9a7b5 x4y-7 4x5y -9 0.7x0.7y0.6 2y6x -9 0.5x0.7y1.3 8a9b20 7x8y17 3a4b10 6x2y9 7x6y 63 2m8b17 y x 63 -7m7b17 9a3b6 4x4y-2 3a3b4 4x3y2 3x2y 3 0.1x0.3y3.3 6y2x 3 0.2x0.7y1
