初二数学二元一次方程组专项练习题 63.docx

1、初二数学二元一次方程组专项练习题 63 3a2b13 3x6y14 5a2b18 9x2y6 6x5y 31 8m9b14 8y5x 31 -10m5b1 7a7b11 6x6y-3 2a9b5 5x y3 3x9y 70 0.7x0.9y1.8 9y2x 70 0.3x0.3y3.4 4a2b7 5x y7 8a b16 5x8y13 3x6y 87 8m2b14 y x 87 -8m3b15 3a3b5 x7y6 5a6b19 x2y-4 2x5y 173 0.9x0.9y2.4 9y6x 173 0.9x0.6y0.3 6a4b13 4x3y19 9a3b19 3x9y3 7x7y 13

2、0 2m8b4 6y6x 130 -1m6b9 5a9b2 6x8y-9 3a b7 8x8y5 8x7y 128 0.9x0.4y1.9 4y7x 128 0.3x0.6y0.1 6a7b6 6x4y8 7a4b3 9x2y14 6x7y 14 2m6b0 8y x 14 -1m5b8 8a3b2 6x5y-5 7a7b1 3x3y-9 7x6y 20 0.3x0.7y2.1 6y8x 20 0.1x0.1y2.7 4a3b12 8x3y10 5a b1 3x2y7 8x5y 57 7m2b16 8y9x 57 -8m9b26 a2b13 9x8y3 8a6b13 3x9y2 5x8y 1

3、0.9x0.6y3 3y4x 1 0.9x0.3y2.3 8a b8 3x8y11 5a7b11 9x7y9 2x5y 71 6m3b29 9y2x 71 -2m9b29 6a3b13 x8y-9 9a4b7 7x6y-7 7x6y 143 0.5x0.8y3.2 6y4x 143 0.8x0.3y0.9 3a2b19 3x3y10 6a9b3 4x3y16 4x4y 58 4m8b4 3y3x 58 -4m9b17 8a9b16 9x3y-3 8a2b20 3x5y-6 7x7y 20 0.9x0.7y2 5y7x 20 0.7x0.1y1.7 3a2b3 7x6y2 2a6b11 x8y11 5x8y 110 3m5b13 y9x 110 -1m4b1 9a3b19 6x3y-5 9a3b16 5x5y8 5x9y 2 0.4x0.3y3.3 7y8x 2 0.4x0.9y3.8 8a8b5 x5y17 3a8b18 7x y12 x8y 30 3m9b22 4y8x 30 -9m6b22 2a2b17 2x y7 3a3b11 x9y8 2x4y -5 0.8x0.9y1.3 6y3x -5 0.9x0.8y3.5