初中数学解二元一次方程组专项练习题 116.docx

1、初中数学解二元一次方程组专项练习题 116 a8b10 8x4y15 7a4b10 9x4y14 4x y 61 2m9b11 3y3x 61 -8m2b30 2a6b10 x7y-5 6a4b14 8x5y0 7x4y 23 0.4x0.7y2.8 8y x 23 0.1x0.9y0.1 4a2b19 8x6y1 2a b10 9x8y7 7x4y 71 2m3b4 y9x 71 -10m2b14 5a b12 7x6y0 a8b9 x7y8 8x6y 80 0.9x0.9y3.3 8y9x 80 0.2x0.7y2.1 4a b18 x8y20 4a4b9 3x4y14 7x2y 186

2、8m9b29 7y9x 186 -9m4b3 5a2b19 5x3y-1 5a2b1 3x3y-3 2x6y 88 0.6x0.7y3.4 4y2x 88 0.2x0.7y0.8 9a7b9 7x y8 5a b8 6x5y9 x4y 90 4m7b12 7y6x 90 -3m3b5 4a6b1 7x3y-4 5a5b8 4x7y-1 7x2y 91 0.1x0.8y0.2 y8x 91 0.5x0.4y2.3 9a6b10 5x7y12 3a8b18 x8y18 x3y 54 8m8b22 7y x 54 -1m b7 2a9b9 5x3y7 3a b5 5x7y-2 x8y 87 0.4x

3、0.5y0.1 4y5x 87 0.5x0.8y3.8 9a3b13 8x4y16 7a2b11 7x9y5 5x y 83 9m5b2 4y4x 83 -2m4b28 4a b6 4x y5 6a2b12 4x6y1 9x2y 161 0.1x0.1y1.4 8y9x 161 0.2x0.8y3.6 4a7b2 3x3y15 8a3b17 7x7y17 9x7y 63 4m8b6 9y5x 63 -7m9b22 7a3b19 2x2y-4 8a9b4 8x4y1 4x2y 167 0.6x0.5y2.1 8y8x 167 0.6x0.7y1.8 8a7b14 9x3y1 7a b12 9x3y18 x8y 139 2m4b12 9y5x 139 -10m9b17 9a3b10 6x y4 7a4b3 3x6y1 2x8y 159 0.1x0.6y3.9 6y x 159 0.4x0.9y3.1 8a6b1 4x4y15 a3b20 7x3y12 3x7y 195 9m8b8 9y3x 195 -4m8b4 6a2b3 3x3y-3 2a9b6 6x9y7 5x9y 44 0.4x0.5y0.6 8y5x 44 0.2x0.7y1.9