初中数学解二元一次方程组专项练习题 58.docx

1、初中数学解二元一次方程组专项练习题 58 7a5b6 5x8y9 5a7b9 4x7y20 5x3y 126 2m2b14 2y5x 126 -1m4b0 8a2b6 8x y0 5a6b5 6x2y7 7x4y 56 0.2x0.8y2.2 4y x 56 0.8x0.6y1 6a9b16 9x5y3 3a4b17 2x7y6 8x5y 7 3m9b4 5y3x 7 -10m2b4 6a7b12 9x8y1 a9b8 3x2y2 6x2y 16 0.3x0.4y0.8 9y3x 16 0.6x0.3y3.4 a7b17 4x3y6 9a b10 8x y12 4x5y 75 6m4b22 7

2、y7x 75 -10m5b19 2a4b19 4x2y-6 2a6b2 6x5y0 5x4y 33 0.4x0.8y2.4 6y3x 33 0.8x0.5y3.8 5a4b15 7x5y17 4a4b17 x4y6 4x4y 106 5m3b30 3y7x 106 -3m3b29 8a b13 7x4y9 7a8b12 2x7y3 8x9y 31 0.2x0.8y3.7 7y8x 31 0.7x0.9y1.1 5a3b17 3x8y17 a6b5 2x4y9 4x6y 141 7m5b21 9y2x 141 -5m7b9 5a4b13 4x3y4 7a7b14 5x4y5 5x y 97 0.

3、6x0.9y1.7 9y8x 97 0.4x0.4y1.1 2a7b18 7x4y5 4a b2 3x6y2 2x5y 92 2m9b7 6y7x 92 -5m4b0 5a4b11 5x5y-4 3a5b17 4x7y4 4x y 136 0.3x0.2y3.5 2y6x 136 0.8x0.3y0.9 4a2b16 2x2y11 7a9b11 6x6y16 8x2y 169 2m3b17 5y2x 169 -6m8b6 6a2b13 6x4y-7 9a b18 6x5y-6 4x2y 196 0.7x0.8y3 3y9x 196 0.4x0.8y2.7 9a7b19 5x9y2 9a7b17 3x7y12 x9y 74 7m3b6 7y4x 74 -7m7b7 9a9b13 6x3y7 7a5b10 x8y-1 4x6y 138 0.4x0.5y1.2 7y3x 138 0.9x0.1y3.9 4a5b5 7x4y18 5a2b20 3x4y11 5x7y 169 2m5b2 y2x 169 -10m4b7 7a9b10 6x6y-5 6a b13 9x5y-8 x6y 179 0.7x0.2y2.8 7y2x 179 0.7x0.5y1.9