初二数学二元一次方程组专项练习题 67.docx

1、初二数学二元一次方程组专项练习题 67 9a8b15 6x3y15 8a8b11 4x3y6 6x8y 102 5m4b15 2y6x 102 -5m8b0 a3b19 4x5y-6 6a3b6 4x7y-5 8x6y 130 0.6x0.1y0.5 y2x 130 0.7x0.4y2.3 3a6b5 3x4y19 2a b12 7x2y7 2x2y 121 m4b22 7y7x 121 -3m7b8 7a9b9 2x4y5 8a2b3 x y-7 3x6y 64 0.1x0.1y3.9 5y4x 64 0.3x0.2y0.4 4a2b15 5x4y16 8a5b15 7x6y14 2x6y

2、46 5m5b15 8y6x 46 -1m6b0 3a2b13 2x y8 9a6b1 7x9y5 x6y 10 0.8x0.3y1.8 5y6x 10 0.8x0.7y2.8 5a5b13 6x6y10 2a4b11 3x3y5 7x3y 106 2m5b10 7y6x 106 -7m8b11 3a8b18 7x3y5 6a4b15 2x6y5 3x2y 2 0.9x0.6y2.3 3y7x 2 0.2x0.8y3 9a6b8 4x2y13 8a b2 x2y10 5x2y 42 2m5b0 7y x 42 -10m b15 a9b10 9x4y8 5a2b11 8x9y3 7x y 196

3、 0.3x0.1y3 y8x 196 0.1x0.1y0.7 5a2b12 8x5y2 a3b12 8x8y11 8x2y 183 m7b2 y2x 183 -1m3b3 8a3b12 7x7y8 a4b7 2x4y3 5x6y 129 0.7x0.9y3 6y9x 129 0.5x0.6y0.6 2a9b19 x5y1 2a6b15 6x8y12 7x4y 93 6m6b6 4y3x 93 -5m4b19 9a8b16 8x5y-8 a4b1 2x4y-10 3x6y 12 0.5x0.4y1.6 7y2x 12 0.7x0.8y3.7 7a3b12 3x7y20 2a8b15 x8y3 4x y 121 6m7b24 4y2x 121 -5m2b22 4a4b10 9x6y3 9a2b5 2x6y3 9x8y 136 0.7x0.2y1.5 3y9x 136 0.9x0.5y1 4a4b2 5x6y18 4a9b17 5x3y18 2x3y 82 m4b28 2y6x 82 -8m2b10 8a4b12 5x3y-7 a9b12 2x2y4 2x3y 108 0.3x0.8y3.7 5y5x 108 0.5x0.6y0.4