北师大版八年级数学下册解二元一次方程组练习题精选 35.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 35 a9b12 x8y5 4a7b11 5x y2 8x2y 89 2m6b27 6y5x 89 -1m6b28 2a4b12 5x3y4 4a b20 x9y6 7x7y 147 0.9x0.3y0.6 y3x 147 0.2x0.1y2.8 7a2b14 3x7y19 9a7b18 4x5y16 x5y 199 m2b15 8y6x 199 -8m3b22 7a9b10 6x7y8 9a6b13 8x y3 4x5y 1 0.9x0.5y1.3 y x 1 0.6x0.3y1.3 4a3b20 3x9y2 7a5b3 6x3y4 2x4y

2、 137 6m b14 7y2x 137 -1m b9 2a5b12 8x9y5 a2b19 4x6y8 6x6y 119 0.8x0.1y0.7 y3x 119 0.2x0.6y3.7 6a7b7 2x3y4 5a5b12 4x8y12 x9y 68 7m4b5 5y5x 68 -1m8b0 7a b14 2x5y-6 6a5b15 x2y-5 8x9y 122 0.3x0.9y2.5 8y7x 122 0.2x0.8y2.5 7a5b1 3x4y11 4a6b6 9x5y13 3x8y 163 7m6b26 2y2x 163 -4m2b11 8a b6 9x4y-8 8a6b19 x2y1

3、0 5x8y -9 0.9x0.4y2.6 5y2x -9 0.8x0.9y0.4 6a9b2 6x3y20 9a2b14 7x2y6 x6y 83 3m3b16 6y9x 83 -3m9b25 3a8b14 5x7y7 6a4b9 4x5y1 3x4y 164 0.4x0.8y1.1 y4x 164 0.5x0.9y1.8 a8b13 x5y19 6a4b7 7x8y1 9x8y 75 3m3b11 2y6x 75 -3m5b5 a8b18 3x2y4 8a7b4 9x6y-9 7x8y 65 0.2x0.1y1.9 2y5x 65 0.2x0.7y1.1 2a7b9 3x9y17 8a4b9 3x6y2 8x6y 16 6m7b25 8y6x 16 -6m2b2 3a2b10 2x6y0 5a3b4 x y7 6x2y -8 0.4x0.7y0.3 9y6x -8 0.7x0.3y1.7 a4b15 4x8y4 7a b12 5x7y20 8x y 121 6m9b30 5y7x 121 -10m8b26 9a3b17 8x y-3 7a4b4 3x9y-1 4x9y 111 0.3x0.4y2.1 5y7x 111 0.6x0.3y0.3