初二数学二元一次方程组专项练习题 26.docx

1、初二数学二元一次方程组专项练习题 26 5a4b6 x2y16 7a8b15 3x y11 8x y 185 7m b1 7y2x 185 -3m2b6 7a2b17 7x4y-7 7a2b4 x2y2 5x6y 113 0.9x0.7y3 6y9x 113 0.6x0.6y1 4a4b16 6x5y11 4a8b13 8x5y1 4x8y 89 3m4b3 6y6x 89 -9m3b30 5a9b3 9x9y-9 5a2b19 x8y5 x8y 104 0.1x0.5y1.6 6y4x 104 0.7x0.7y1.9 a9b1 4x2y4 6a6b1 5x8y14 6x7y 46 4m3b2

2、4 4y8x 46 -3m7b26 6a3b7 8x7y6 5a3b14 2x8y10 4x y 21 0.7x0.4y2.6 8y8x 21 0.3x0.5y0.1 8a9b5 5x9y4 7a8b18 7x4y11 7x7y -10 5m5b19 7y8x -10 -5m9b25 4a b7 3x6y-6 9a2b17 x4y-5 x4y 174 0.9x0.2y2.5 9y7x 174 0.9x0.6y1.8 9a2b10 9x5y14 8a8b5 8x9y5 6x8y 161 6m2b29 3y7x 161 -1m3b11 a8b11 9x6y10 2a8b9 9x3y-10 9x7y

3、 69 0.6x0.3y3.5 5y9x 69 0.2x0.6y0.3 9a8b12 6x7y19 a5b7 9x7y6 2x y 44 9m6b3 3y6x 44 -2m9b2 3a8b20 7x5y2 2a6b11 2x9y-4 x4y 77 0.3x0.3y3.7 3y3x 77 0.5x0.4y3.3 7a6b12 6x9y16 4a5b2 2x6y19 x5y 39 7m4b26 4y7x 39 -9m8b26 7a2b7 6x3y2 6a7b18 4x3y8 2x4y 52 0.2x0.2y3.1 9y6x 52 0.6x0.5y3.3 6a8b3 3x7y4 2a4b4 5x8y7 4x9y 152 m8b11 4y3x 152 -4m3b10 4a2b9 6x2y2 9a7b5 3x y-1 6x4y 71 0.7x0.9y0.1 2y5x 71 0.4x0.2y0.4 9a2b16 6x y7 7a8b13 8x3y9 x6y 102 m4b17 2y9x 102 -7m3b9 6a b15 8x2y4 8a6b1 8x6y-8 4x5y -5 0.5x0.9y3.9 7y7x -5 0.1x0.5y2.5