初二数学二元一次方程组专项练习题 10.docx

1、初二数学二元一次方程组专项练习题 10 a b1 8x6y3 7a5b14 x y2 7x3y 129 3m6b10 4y7x 129 -3m b29 3a2b13 5x4y-3 8a4b6 3x5y8 4x6y 165 0.6x0.8y1.3 9y2x 165 0.3x0.6y3.1 6a7b13 x8y4 6a8b1 8x4y14 3x5y 188 9m4b19 5y9x 188 -1m6b27 6a4b19 4x3y10 3a2b19 2x9y-8 x8y 87 0.7x0.9y1.2 2y2x 87 0.2x0.6y2.4 6a5b7 3x6y20 5a7b6 5x9y6 2x4y 1

2、74 5m9b14 4y2x 174 -10m5b13 4a4b4 x9y7 9a3b12 9x5y3 5x7y 72 0.6x0.5y1.3 3y2x 72 0.1x0.8y3.2 7a b4 9x7y4 4a6b7 4x y2 3x8y 135 2m4b2 6y8x 135 -5m3b24 7a6b19 3x3y8 7a b8 x2y-9 x6y 107 0.8x0.8y0.1 6y5x 107 0.1x0.3y2.4 6a7b8 9x7y13 5a6b18 3x3y16 6x7y 74 4m8b23 y2x 74 -2m4b5 5a4b6 9x4y4 6a b12 x9y3 5x6y 1

3、93 0.7x0.8y3.3 4y2x 193 0.4x0.3y1.8 7a7b15 8x4y6 6a6b20 4x8y19 6x2y 1 7m3b30 6y x 1 -1m6b9 a9b13 3x8y-7 7a2b3 4x8y-2 3x7y 59 0.1x0.1y3.6 5y x 59 0.2x0.1y2.7 a6b11 5x6y1 8a9b9 2x7y5 5x2y 58 4m6b4 5y x 58 -9m2b27 3a b11 6x y9 4a7b2 9x3y8 x2y 155 0.6x0.9y3.4 5y7x 155 0.9x0.8y0.8 7a6b15 x y16 9a9b18 7x2y3 9x7y 63 8m6b28 6y8x 63 -10m5b19 8a3b17 6x7y-8 4a7b5 4x9y7 9x4y 137 0.4x0.9y0.4 7y8x 137 0.1x0.1y3.9 9a8b2 5x5y5 4a8b17 9x3y5 9x6y 32 3m7b24 9y9x 32 -9m b20 5a2b11 6x9y-8 a2b1 6x6y3 6x4y 33 0.7x0.2y1.5 y x 33 0.6x0.7y3.5