二元一次方程组专项练习题15.docx

1、二元一次方程组专项练习题15 9a8b16 2x2y2 3a b5 5x2y18 6x6y 94 6m5b4 2y2x 94 -1m5b15 9a b17 2x8y5 9a5b2 6x7y-5 6x4y 11 0.7x0.3y3.1 4y4x 11 0.5x0.4y1.4 9a4b7 2x9y12 3a4b13 5x2y7 2x8y 139 6m6b1 9y4x 139 -8m3b23 9a5b8 9x6y10 6a6b2 5x2y1 2x6y 7 0.7x0.9y3.8 7y8x 7 0.5x0.3y1.9 7a4b12 3x9y20 a b9 5x8y5 3x8y 22 8m4b16 3y

2、7x 22 -3m4b8 9a8b11 3x8y-8 4a5b6 x9y-6 6x8y 46 0.1x0.8y3.6 4y2x 46 0.7x0.6y1.6 2a2b3 6x7y13 8a9b6 6x4y18 x5y 109 5m9b26 6y4x 109 -4m b2 2a5b7 7x3y-1 7a b20 3x4y-10 6x7y 112 0.5x0.9y2.1 5y x 112 0.9x0.2y0.5 2a4b7 3x8y15 a b12 3x2y14 2x7y 66 5m6b26 9y x 66 -5m5b13 5a4b17 9x6y-4 2a2b5 4x5y-10 2x6y 158

3、0.7x0.4y2.1 4y2x 158 0.1x0.6y0.9 8a2b17 9x y2 2a b15 4x2y6 8x5y 2 8m8b22 3y8x 2 -10m2b15 8a7b1 8x6y-3 a3b6 8x y-7 3x2y 131 0.6x0.1y3.9 2y8x 131 0.3x0.6y2.1 4a2b7 7x8y9 6a5b19 4x9y19 6x y 25 3m8b9 5y x 25 -6m3b2 3a9b6 2x5y5 4a8b11 2x3y-10 7x6y 141 0.7x0.3y3.6 4y9x 141 0.4x0.1y2.8 a6b18 7x7y19 6a9b12

4、7x6y8 6x9y 53 5m6b3 y2x 53 -7m4b30 5a6b5 x y-10 2a2b6 5x8y6 3x5y 42 0.1x0.7y1.9 8y5x 42 0.8x0.2y2.9 a8b13 x2y14 3a b13 7x8y8 x4y 174 2m b28 6y8x 174 -5m7b21 8a2b20 5x3y-6 3a6b8 4x4y1 2x9y 181 0.6x0.7y3.8 4y x 181 0.7x0.6y2.7 8a4b17 x8y2 4a4b20 6x5y12 5x2y 61 6m8b26 3y2x 61 -5m2b21 2a2b10 7x4y-10 5a4

5、b5 9x9y8 4x4y 115 0.4x0.8y2.7 5y9x 115 0.5x0.1y2.8 8a2b6 2x7y12 3a4b1 5x7y1 4x9y 108 5m3b4 6y5x 108 -9m b18 5a5b15 8x y6 6a5b18 8x8y-6 2x y 90 0.5x0.6y1 8y8x 90 0.9x0.4y3.6 6a9b7 2x8y20 a2b12 x8y2 4x5y 14 7m7b4 6y5x 14 -3m b20 2a7b12 4x7y-9 7a6b3 x9y1 5x7y 194 0.5x0.5y1 7y5x 194 0.2x0.9y1 3a8b12 7x6

6、y14 7a3b13 3x7y8 2x2y 5 3m3b27 8y2x 5 -2m6b20 7a3b12 7x8y-2 3a b16 5x8y-6 3x7y 16 0.8x0.5y0.6 9y x 16 0.7x0.2y2.5 5a b7 3x7y16 6a9b9 x3y10 4x3y 92 6m5b24 6y x 92 -6m b14 3a4b14 3x5y9 2a6b2 6x y-1 5x2y 119 0.1x0.9y1.8 5y3x 119 0.4x0.6y0.4 7a7b19 3x8y18 5a4b13 x2y2 7x3y 31 3m3b11 4y8x 31 -3m2b11 8a9b16 x4y-7 8a6b19 6x5y7 8x9y 147 0.7x0.4y3.2 y2x 147 0.8x0.9y1.7