二元一次方程组专项练习题42.docx

1、二元一次方程组专项练习题42 a9b2 6x8y18 5a7b8 5x5y11 6x3y 123 5m2b6 4y5x 123 -10m4b15 5a4b4 2x9y-7 3a7b17 5x4y6 2x2y 32 0.2x0.8y4 7y3x 32 0.8x0.2y0.8 7a5b9 4x7y16 8a4b2 2x9y11 2x7y 14 2m5b0 4y3x 14 -5m2b25 a b5 6x8y10 4a7b3 5x9y1 9x3y 85 0.4x0.3y0.5 7y8x 85 0.3x0.6y1.1 2a6b20 8x7y11 5a5b10 7x4y1 7x3y 172 8m2b22

2、8y6x 172 -8m8b26 a2b19 5x y0 5a9b1 3x2y8 6x y 10 0.5x0.3y2.6 6y9x 10 0.3x0.5y2.2 4a2b10 6x y15 4a8b6 5x6y12 x y 117 4m7b16 5y2x 117 -10m7b18 9a b10 2x y2 3a8b20 4x5y1 7x3y 77 0.3x0.3y3 6y9x 77 0.9x0.9y0.9 9a b4 7x9y12 4a3b15 5x4y15 x8y 79 8m4b16 y6x 79 -9m4b12 5a3b6 2x6y0 2a9b8 4x3y4 7x8y 165 0.2x0.

3、4y0.7 7y8x 165 0.3x0.3y1.8 7a b8 3x5y7 3a2b4 7x8y19 6x5y 41 9m b5 8y9x 41 -2m9b9 5a3b12 4x3y9 4a4b11 4x7y-2 3x2y 84 0.2x0.1y1.5 6y7x 84 0.5x0.7y2.2 2a4b13 5x6y12 6a9b5 9x3y19 3x3y 20 6m4b25 7y3x 20 -6m7b9 5a3b6 7x5y9 3a5b7 x2y4 2x7y 153 0.2x0.4y2.1 7y6x 153 0.2x0.5y0.3 2a6b6 5x y19 6a6b17 8x7y3 7x6y

4、 79 3m7b6 3y5x 79 -6m2b23 4a4b1 4x9y-9 8a4b4 x2y10 6x3y 24 0.2x0.9y3.3 7y3x 24 0.9x0.2y0.3 3a4b12 2x3y12 9a b20 2x5y2 7x7y 43 7m8b26 4y x 43 -6m9b13 4a5b10 3x9y-7 a2b11 4x8y7 x7y 101 0.6x0.6y2.3 3y7x 101 0.5x0.2y3.4 6a5b18 4x3y8 3a b8 6x8y7 3x2y 112 6m3b0 7y x 112 -2m9b28 6a b6 4x8y-4 9a6b20 7x9y9 4

5、x6y 66 0.8x0.8y2.5 4y4x 66 0.3x0.8y0.9 a7b17 6x7y8 4a3b5 8x2y14 2x4y 196 6m9b27 7y2x 196 -8m9b18 7a5b9 2x5y-9 6a7b5 9x9y9 5x y 107 0.4x0.7y0.8 6y2x 107 0.6x0.8y2.2 6a7b5 3x9y14 a4b3 9x5y12 6x y 115 7m5b11 6y6x 115 -3m8b19 8a2b8 6x9y9 5a7b13 9x3y-8 2x2y 180 0.6x0.2y3.3 5y5x 180 0.8x0.6y3.2 4a9b2 x4y1

6、7 4a b7 5x6y9 5x7y 148 8m2b13 8y x 148 -8m8b19 2a3b3 6x7y9 8a9b13 7x y4 3x4y 163 0.7x0.1y1.9 6y3x 163 0.3x0.3y0.6 a8b15 9x3y6 7a6b20 9x5y9 x5y 98 2m5b13 3y2x 98 -10m5b24 2a9b10 5x9y3 8a6b2 7x6y-6 x9y 114 0.4x0.8y1.5 y8x 114 0.7x0.3y0.8 5a2b8 2x9y3 6a5b4 4x3y11 x9y 121 2m7b29 y x 121 -10m8b7 9a3b13 2x9y-2 3a6b19 5x5y-1 2x8y 70 0.5x0.2y1 y8x 70 0.2x0.1y0.4