二元一次方程组专项练习题27.docx

1、二元一次方程组专项练习题27 2a b1 4x9y5 6a b17 7x8y12 7x3y 44 5m9b15 6y6x 44 -8m b29 7a2b4 6x9y10 5a2b4 4x2y-8 x5y 167 0.7x0.5y0.2 6y7x 167 0.8x0.8y2.4 5a5b20 3x6y16 9a6b17 7x7y2 x7y 45 9m9b0 5y x 45 -1m8b16 5a4b12 3x8y-1 9a9b18 8x y2 x2y 139 0.7x0.7y1.7 5y9x 139 0.8x0.2y2.3 2a5b4 5x5y14 2a4b6 7x8y14 3x8y 116 2m

2、7b6 3y2x 116 -1m6b5 2a6b19 x8y-9 9a3b10 6x3y5 9x2y 66 0.1x0.6y1.4 2y5x 66 0.5x0.6y3.1 a5b10 2x7y8 8a8b16 7x y7 8x3y 107 7m7b26 5y9x 107 -1m8b28 9a5b6 2x9y-8 5a5b10 9x3y8 x9y 46 0.5x0.4y0.3 3y5x 46 0.2x0.6y1.3 2a7b11 8x9y4 4a2b20 3x4y2 4x5y 62 8m4b28 8y7x 62 -2m b7 6a7b2 x6y3 6a2b1 7x7y-9 4x7y 193 0.

3、8x0.4y1.9 8y9x 193 0.2x0.7y3.1 5a4b13 5x8y18 5a9b13 4x4y6 2x5y 25 5m7b22 6y4x 25 -3m2b7 7a5b11 3x9y8 2a6b4 3x2y-3 7x8y 104 0.1x0.5y0.1 y6x 104 0.9x0.9y1.5 9a6b2 2x9y4 4a6b16 7x6y17 5x2y 0 7m8b8 4y3x 0 -3m7b16 6a4b12 8x4y-8 6a4b12 4x y-4 8x7y 114 0.3x0.5y1.8 9y9x 114 0.8x0.1y1.7 a6b14 5x5y4 5a9b2 9x7

4、y13 9x6y 38 9m8b13 3y2x 38 -10m8b17 2a4b17 2x5y6 4a2b20 6x2y0 6x8y -6 0.3x0.1y3 9y6x -6 0.6x0.8y1.2 3a3b20 x6y20 8a5b10 3x7y19 8x6y 45 m5b9 y x 45 -10m6b4 2a b4 7x9y0 6a2b6 3x9y8 5x8y 162 0.3x0.5y4 8y7x 162 0.7x0.1y1.6 6a2b10 6x6y12 6a9b18 3x y11 8x3y 49 m2b21 5y x 49 -7m8b23 a b11 3x8y-6 6a5b17 7x6

5、y6 7x4y 150 0.1x0.9y3.5 5y5x 150 0.6x0.5y0.7 3a7b1 x8y1 7a3b13 3x y13 4x6y 82 m8b20 3y4x 82 -5m8b15 7a9b19 x y6 3a8b16 x9y-2 9x3y 186 0.7x0.9y0.2 5y x 186 0.9x0.1y1.8 2a5b3 2x4y9 3a3b13 8x7y11 3x4y 198 3m b28 4y5x 198 -7m7b15 4a3b10 7x4y8 2a8b13 8x9y-1 8x7y -5 0.4x0.6y2.6 2y7x -5 0.7x0.6y1.8 4a5b6 2

6、x4y11 4a9b17 6x6y6 5x7y 46 2m2b9 6y8x 46 -8m8b0 3a b13 5x y-1 2a5b14 8x6y-1 x5y 86 0.3x0.6y2.3 6y5x 86 0.6x0.1y1.4 2a5b17 4x8y6 3a4b2 2x7y1 7x8y 80 3m7b4 6y9x 80 -5m2b21 7a8b9 6x9y10 a2b1 5x8y-1 5x9y 164 0.2x0.7y3.2 8y6x 164 0.2x0.2y3.5 6a7b13 2x2y8 a6b12 6x6y12 4x2y 78 8m7b23 5y5x 78 -8m6b14 5a3b7 9x2y-2 6a2b12 2x3y8 x9y 52 0.8x0.7y1.6 2y5x 52 0.8x0.1y2.4