二元一次方程组专项练习题28.docx

1、二元一次方程组专项练习题28 5a8b8 9x4y4 6a8b14 3x9y3 2x6y 107 7m b5 3y6x 107 -4m4b18 2a9b15 6x4y10 9a3b12 x y-10 3x8y 40 0.1x0.7y0.7 2y x 40 0.4x0.5y0.1 5a9b16 3x3y20 8a6b2 8x y9 3x3y 125 m8b16 5y x 125 -2m4b19 9a9b9 8x5y-10 6a7b5 3x2y0 8x7y 86 0.4x0.1y1.7 3y x 86 0.9x0.9y3.2 8a6b16 5x7y12 7a2b2 9x y14 9x3y 26 8

2、m3b2 2y8x 26 -1m4b24 4a2b8 2x3y5 4a6b8 7x7y4 6x4y 131 0.7x0.7y0.2 y5x 131 0.9x0.1y3 8a b18 9x5y12 9a8b2 5x4y17 3x2y 8 2m b21 7y7x 8 -1m3b30 4a4b11 4x5y5 5a2b8 5x y10 8x6y 61 0.5x0.9y3.7 8y x 61 0.9x0.2y3.5 7a3b11 2x7y15 5a8b9 4x3y10 7x6y 124 2m7b3 5y7x 124 -9m5b7 2a4b15 5x3y-9 3a7b5 5x7y-7 x9y 197 0

3、.4x0.6y1.5 y2x 197 0.8x0.7y3.1 3a4b19 4x7y10 a2b12 4x3y16 2x7y 114 2m4b24 8y9x 114 -6m2b14 4a8b18 x8y10 9a4b15 x4y9 9x8y 96 0.2x0.1y2.8 y2x 96 0.7x0.5y1.3 2a b17 4x3y17 a7b19 7x8y3 3x6y 160 m6b10 6y8x 160 -1m4b24 8a2b18 2x7y-10 7a9b19 3x4y-2 4x9y 28 0.7x0.7y0.5 2y5x 28 0.9x0.7y2.9 9a8b13 7x8y9 9a3b2

4、 3x7y19 3x3y 170 4m5b16 3y7x 170 -10m9b22 4a2b13 7x4y9 6a8b13 5x6y-7 6x4y 62 0.6x0.1y1.8 9y6x 62 0.5x0.4y1.6 7a8b8 x5y9 6a9b2 8x y17 6x9y -10 4m7b6 5y7x -10 -6m7b15 9a9b15 6x4y4 7a3b8 4x2y7 5x3y 103 0.6x0.8y1.8 2y3x 103 0.6x0.7y2.7 4a b18 9x9y10 4a5b13 x3y5 x4y -1 6m9b25 3y8x -1 -9m8b25 9a b19 x3y0

5、7a4b12 3x7y-4 7x8y 118 0.3x0.9y3.4 9y7x 118 0.7x0.6y3.1 3a3b1 x7y11 2a9b14 4x4y9 2x y 53 6m7b29 2y4x 53 -10m b16 8a5b19 3x8y4 5a2b15 x2y9 2x7y 66 0.2x0.7y1.3 y9x 66 0.7x0.7y2.2 7a2b8 7x6y1 8a2b8 5x4y19 4x3y 60 m9b23 2y5x 60 -4m6b24 3a b16 5x2y5 a2b9 2x y-2 6x5y 80 0.5x0.1y0.3 5y5x 80 0.6x0.1y0.2 9a5

6、b11 7x8y1 8a6b19 x2y2 6x7y 155 7m5b19 9y4x 155 -7m4b23 8a2b4 6x5y-1 5a4b2 x6y-10 x y 28 0.7x0.3y2.2 6y5x 28 0.5x0.4y0.3 6a8b16 2x7y1 8a4b14 2x y5 2x9y 182 9m3b14 3y9x 182 -9m6b3 2a9b15 3x4y5 4a7b7 8x6y5 4x6y 112 0.9x0.4y0.1 y2x 112 0.8x0.5y3.3 6a9b5 2x2y12 7a3b20 9x8y9 8x3y 113 3m4b24 7y4x 113 -10m b29 4a4b9 5x7y-5 7a6b16 5x2y3 x y 15 0.9x0.7y0.9 9y4x 15 0.7x0.6y0.7