二元一次方程组专项练习题117.docx

1、二元一次方程组专项练习题117 2a b14 7x5y17 a3b3 3x6y1 5x7y 85 2m6b6 6y x 85 -2m b13 9a7b12 7x3y-6 5a b14 9x7y-5 8x9y 158 0.1x0.2y2.7 9y x 158 0.7x0.7y3.1 9a2b17 x9y13 2a4b8 3x9y20 5x3y 36 2m6b6 y3x 36 -4m6b17 4a4b18 4x7y0 7a5b1 6x2y8 4x6y 117 0.3x0.8y3.4 5y5x 117 0.3x0.2y0.9 7a b9 5x7y18 3a9b18 9x4y20 7x3y 19 3m

2、2b5 6y9x 19 -7m4b7 5a4b4 2x7y3 3a8b7 7x y0 9x5y 3 0.4x0.3y1.7 6y9x 3 0.3x0.9y0.8 7a7b6 3x8y9 3a2b4 7x7y16 8x6y 78 3m9b17 5y8x 78 -9m2b23 6a7b19 2x2y4 a6b17 7x9y10 6x4y 88 0.2x0.8y1.3 3y6x 88 0.3x0.9y3.4 5a9b12 5x2y12 7a8b15 x9y14 8x2y 84 9m2b27 4y x 84 -3m3b24 4a3b6 8x y5 3a5b14 x7y-3 7x2y 197 0.1x0

3、.4y0.7 y3x 197 0.5x0.2y3.2 8a9b4 x7y7 a6b6 8x7y5 9x6y 147 7m5b4 y2x 147 -7m4b7 6a3b16 3x6y-5 3a b5 8x3y3 4x9y 91 0.3x0.9y1.3 5y4x 91 0.5x0.3y3.3 5a7b16 5x6y10 6a3b19 6x3y11 9x7y 102 3m b29 4y x 102 -3m7b16 6a2b17 5x9y-7 3a2b10 9x8y-4 5x3y 158 0.4x0.4y3.5 6y5x 158 0.7x0.6y2.6 5a3b20 2x7y17 8a5b2 4x y

4、11 3x6y 68 2m5b20 y8x 68 -3m b1 6a5b15 8x2y2 3a3b10 6x y5 2x4y 13 0.2x0.4y3.9 3y6x 13 0.5x0.6y2.4 a3b10 7x4y4 6a b1 3x5y7 2x5y -9 5m5b8 9y7x -9 -4m2b3 8a4b12 4x6y10 a8b8 9x6y-4 x3y 55 0.3x0.4y2.5 2y7x 55 0.9x0.9y2.9 6a8b18 x6y14 7a5b20 2x5y15 9x9y 95 8m7b21 2y x 95 -1m7b23 7a9b17 x3y9 7a7b7 x8y8 3x5

5、y 136 0.4x0.7y4 9y3x 136 0.5x0.5y1.7 3a9b7 3x8y14 5a3b18 5x7y10 9x3y 122 6m b13 7y4x 122 -8m2b19 2a3b7 8x y3 5a3b10 7x3y10 x4y 181 0.2x0.6y3.3 6y4x 181 0.4x0.1y1.6 4a8b15 4x5y9 3a4b4 8x5y6 9x4y 2 9m9b15 7y6x 2 -9m4b13 3a7b3 x2y-5 2a b2 6x4y3 3x y 180 0.7x0.8y1.2 3y9x 180 0.7x0.6y2.7 6a4b7 7x4y20 2a2

6、b8 7x7y13 5x3y 28 5m7b7 y9x 28 -3m4b11 3a b9 8x9y-2 6a6b12 4x8y2 7x4y 20 0.6x0.5y3.8 6y4x 20 0.1x0.8y3.9 5a3b19 7x7y20 6a2b11 9x6y18 3x4y 87 5m7b25 5y8x 87 -9m3b9 2a7b8 9x4y7 a3b18 7x2y-7 5x6y 143 0.2x0.6y2.5 6y2x 143 0.6x0.8y2.6 2a b4 7x7y4 5a7b10 5x4y14 4x2y 161 3m9b11 6y5x 161 -6m5b21 4a b9 x8y-6 8a3b15 9x3y-9 5x2y 83 0.9x0.8y1.7 3y3x 83 0.7x0.2y1.9