二元一次方程组专项练习题119.docx

1、二元一次方程组专项练习题119 9a6b12 9x7y14 9a3b9 3x5y1 8x4y -7 2m b24 2y3x -7 -5m b5 6a8b1 7x2y2 5a8b2 2x7y4 6x y 140 0.2x0.2y1.6 8y6x 140 0.5x0.1y3 6a4b16 2x y20 2a4b14 7x2y7 2x y 162 3m8b6 5y4x 162 -3m4b28 6a6b2 6x4y-4 6a4b17 8x y6 4x5y 168 0.3x0.1y2.7 4y6x 168 0.2x0.9y2.8 3a b14 4x5y4 5a9b9 9x y9 9x5y 121 3m3

2、b10 3y5x 121 -3m2b28 5a9b15 2x3y9 9a9b15 6x2y-5 8x9y 1 0.1x0.7y0.8 7y7x 1 0.6x0.2y0.9 8a2b12 6x6y15 a9b16 6x6y19 3x9y 136 6m b11 7y8x 136 -9m4b0 2a6b8 5x9y5 5a8b12 3x2y9 2x8y 135 0.3x0.5y1.5 9y9x 135 0.4x0.4y3 4a6b13 9x2y3 2a8b12 5x3y7 7x y 143 5m5b19 3y5x 143 -3m b21 6a5b11 7x3y1 4a2b10 2x6y-9 5x y

3、 150 0.9x0.2y1.2 8y7x 150 0.2x0.1y1.2 4a6b4 3x y20 6a3b18 8x7y6 8x5y 146 4m8b13 2y2x 146 -4m9b20 6a3b5 4x8y7 a8b20 x3y-8 6x3y 112 0.8x0.2y0.3 5y3x 112 0.8x0.9y3 7a5b14 x7y19 8a5b12 2x5y13 8x7y 162 9m8b26 y2x 162 -3m4b16 3a9b6 2x9y1 5a4b15 4x2y1 5x9y 81 0.2x0.8y2.3 2y x 81 0.4x0.4y2.9 7a5b2 6x3y11 2a

4、7b18 8x7y3 x4y 61 6m4b6 9y4x 61 -7m4b1 8a6b10 7x7y-7 7a8b17 5x8y4 4x2y 149 0.4x0.9y2.9 6y7x 149 0.1x0.2y2.6 8a4b7 9x3y6 2a2b15 6x3y5 9x2y 107 8m b7 9y x 107 -1m b5 4a2b18 x4y4 6a2b10 2x y-5 5x4y 71 0.9x0.8y2.8 8y7x 71 0.6x0.4y0.7 2a9b20 6x3y7 3a9b7 2x7y4 7x3y 21 9m9b17 y6x 21 -3m7b28 7a8b5 7x8y-2 4a

5、7b15 9x y10 8x4y 68 0.2x0.9y2.3 3y4x 68 0.9x0.4y1.5 4a4b1 6x4y17 8a b5 2x5y20 5x2y 130 m b10 6y8x 130 -2m6b10 a b3 8x2y0 2a9b18 8x3y5 6x6y 15 0.6x0.6y2.6 9y6x 15 0.9x0.4y1.2 6a2b7 x4y13 5a2b4 4x5y1 4x6y 24 6m2b22 2y8x 24 -8m7b10 7a2b11 3x9y-8 5a6b12 6x4y-3 9x6y 56 0.4x0.5y0.2 2y9x 56 0.2x0.6y0.4 a6b

6、19 x2y7 6a9b8 5x9y5 8x6y 75 8m5b21 7y8x 75 -6m3b3 8a7b9 7x y-1 7a2b7 3x7y1 2x y 149 0.7x0.5y3.1 7y6x 149 0.1x0.3y3.7 7a4b11 5x2y15 6a2b20 2x4y10 6x2y 65 5m6b13 5y x 65 -2m5b10 5a9b17 7x5y-2 2a6b1 8x6y-9 5x2y 82 0.8x0.6y0.1 7y2x 82 0.8x0.7y0.7 6a3b10 6x2y10 7a7b1 4x8y11 5x4y 80 6m7b11 7y6x 80 -3m b0 6a9b15 2x4y8 9a4b2 6x6y1 x2y 87 0.9x0.8y1.1 y4x 87 0.5x0.4y3.9