北师大版八年级数学下册解二元一次方程组练习题精选 6.docx

1、北师大版八年级数学下册解二元一次方程组练习题精选 6 5a4b9 9x3y8 a4b9 2x7y14 7x y -2 6m3b13 7y7x -2 -10m b14 5a3b16 x3y10 6a4b2 x y0 9x9y 160 0.3x0.2y2.2 6y6x 160 0.2x0.6y2.6 a9b8 x4y13 8a5b9 5x8y19 6x4y 102 4m7b23 6y9x 102 -6m2b20 4a2b12 7x7y4 5a6b15 3x y10 6x8y 173 0.2x0.5y2.7 5y9x 173 0.2x0.3y0.7 a5b14 7x9y4 7a8b19 x3y13

2、5x4y 163 7m8b3 y6x 163 -8m9b14 2a6b9 8x6y-1 5a6b19 3x5y-1 7x9y 79 0.2x0.7y0.4 6y3x 79 0.4x0.5y0.2 6a3b10 8x2y2 7a7b5 8x4y10 7x5y 142 4m3b14 y8x 142 -9m6b0 9a8b6 3x4y3 7a4b17 2x4y-9 5x4y 185 0.6x0.5y0.7 2y x 185 0.1x0.2y2.4 6a9b3 6x y12 7a4b7 4x7y12 2x y -7 5m4b1 8y7x -7 -7m2b11 5a b17 4x3y-4 a3b2 4x

3、5y-1 7x7y 151 0.7x0.6y3.2 7y9x 151 0.1x0.9y3.8 2a2b15 3x6y14 6a7b16 3x9y3 4x6y 38 7m4b0 6y5x 38 -8m2b2 5a4b19 3x3y2 8a8b16 9x y4 6x3y 50 0.3x0.4y1.7 5y5x 50 0.5x0.3y3.4 7a9b9 8x5y12 a b10 4x5y13 2x2y 120 m b18 6y2x 120 -7m5b3 5a7b18 4x2y-5 a8b15 4x8y10 6x2y 192 0.5x0.1y2.7 y8x 192 0.4x0.1y2.4 3a8b3 6x8y15 3a9b15 x3y7 5x y 60 7m2b30 4y6x 60 -1m5b20 5a7b18 4x7y1 7a9b16 x6y9 6x9y 91 0.8x0.7y0.7 2y2x 91 0.8x0.4y0.7 4a b17 2x7y15 6a6b11 6x7y12 3x y 154 2m6b9 4y9x 154 -7m b21 8a6b1 5x2y4 9a6b8 2x3y-4 8x2y 199 0.4x0.7y1.3 8y9x 199 0.3x0.3y2.9