初二数学二元一次方程组专项练习题 113.docx

1、初二数学二元一次方程组专项练习题 113 5a5b1 3x5y3 7a8b19 x7y5 8x8y 108 5m8b16 4y9x 108 -7m4b26 2a b11 6x y6 7a7b15 7x7y-7 4x9y 2 0.3x0.6y0.6 7y4x 2 0.5x0.1y4 7a3b8 5x5y9 a8b3 5x5y14 x y 35 9m8b14 6y3x 35 -4m b15 a5b2 9x4y4 8a6b5 5x2y-4 2x4y 121 0.9x0.7y0.4 3y7x 121 0.7x0.8y1.2 4a6b3 9x5y2 3a3b15 6x9y7 8x7y 88 3m4b9

2、9y x 88 -2m2b21 5a8b7 5x8y3 8a8b14 4x4y-5 8x9y 96 0.2x0.2y1.8 7y7x 96 0.6x0.7y4 6a4b8 5x y8 2a7b1 6x5y10 7x2y 142 3m2b3 5y9x 142 -5m5b11 9a9b17 5x8y-8 4a2b15 8x6y1 7x6y 94 0.7x0.5y1.3 6y4x 94 0.7x0.1y3.5 a2b6 6x6y10 a b16 5x3y15 7x6y 50 4m2b9 9y8x 50 -1m8b3 7a7b14 8x8y5 3a3b7 5x8y2 5x9y 184 0.3x0.9y

3、3.3 6y3x 184 0.3x0.4y0.3 7a5b20 8x y1 6a4b11 x8y20 3x8y 77 m2b20 3y7x 77 -5m9b1 5a b12 7x y0 8a9b11 9x2y5 5x2y 124 0.4x0.2y0.4 2y3x 124 0.4x0.1y0.7 4a3b5 2x4y9 4a b18 x3y4 3x7y 47 9m4b27 9y3x 47 -1m2b22 4a7b4 5x4y8 7a2b16 5x8y3 5x6y 48 0.8x0.2y0.7 3y8x 48 0.4x0.5y3.1 a9b3 7x5y15 7a4b6 7x9y20 8x6y 188 3m9b27 y x 188 -8m3b9 4a4b11 9x7y3 7a b18 7x9y8 5x7y -5 0.7x0.7y2.7 8y3x -5 0.9x0.5y1.3 9a9b4 4x6y12 9a3b2 3x3y15 5x3y 53 4m2b19 5y9x 53 -3m6b27 2a9b6 4x3y5 7a3b11 3x7y-10 6x2y 111 0.9x0.7y2 6y4x 111 0.9x0.3y3.7