初中数学解二元一次方程组专项练习题 38.docx

1、初中数学解二元一次方程组专项练习题 38 8a b19 9x4y2 2a2b6 6x3y14 9x2y 138 5m5b17 y2x 138 -1m7b10 2a3b20 8x5y-9 2a b9 4x4y6 4x7y 26 0.5x0.6y1.5 4y6x 26 0.4x0.9y0.6 a2b2 5x9y19 8a6b16 6x2y10 7x4y 128 6m4b2 6y9x 128 -3m7b18 a8b18 3x3y3 7a6b7 6x8y-7 7x5y 91 0.9x0.3y2.9 8y4x 91 0.9x0.7y0.8 9a6b5 9x8y11 9a5b12 5x8y6 x8y 91

2、 3m6b27 8y6x 91 -6m b10 3a5b8 x9y-1 8a8b8 5x6y-5 2x4y 120 0.9x0.5y3.5 7y6x 120 0.6x0.1y2.7 3a4b11 6x8y4 3a b3 8x2y8 2x9y 26 9m2b22 y2x 26 -9m4b9 8a8b16 6x y1 7a3b9 x3y1 2x5y 166 0.5x0.5y3 6y4x 166 0.2x0.8y0.6 4a b7 x4y12 8a7b13 5x3y17 3x3y 33 6m8b3 4y2x 33 -1m2b29 a5b5 5x2y9 7a5b6 8x4y-9 x5y 137 0.9

3、x0.3y3.5 8y5x 137 0.3x0.5y1.5 6a7b6 6x3y3 6a3b17 9x9y11 9x8y 64 5m3b1 5y4x 64 -5m7b21 8a b9 3x7y8 2a b13 6x7y8 8x9y 63 0.1x0.1y1.1 3y3x 63 0.8x0.2y3.9 4a5b1 x9y5 6a8b19 9x4y17 3x5y 85 4m9b18 4y x 85 -9m3b3 9a4b1 3x7y-10 9a9b19 7x3y-2 5x3y 116 0.8x0.2y1.6 7y8x 116 0.7x0.7y3.8 a9b19 x4y7 9a8b5 8x3y17 3x3y 29 7m2b25 8y5x 29 -4m4b10 7a3b5 5x9y1 a b16 x2y8 8x7y 153 0.1x0.9y2.1 9y6x 153 0.8x0.5y3.9 8a8b4 x6y20 3a9b11 5x6y18 8x2y 150 3m9b17 4y x 150 -7m2b23 5a7b15 8x7y-2 3a9b17 x6y-10 2x y 5 0.7x0.9y2.8 4y4x 5 0.3x0.2y0.1