北师大版八年级数学下册解二元一次方程组练习题精选 33.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 33 4a3b3 2x y13 2a6b9 5x3y6 x7y 125 5m6b6 5y9x 125 -6m7b22 2a9b3 2x7y-1 3a4b18 6x8y-6 x y 145 0.3x0.9y3.1 4y6x 145 0.2x0.2y3.5 3a3b1 5x8y11 3a6b17 5x4y11 4x2y 38 5m b16 8y x 38 -5m5b0 7a b9 7x4y-3 4a5b11 x9y-7 8x9y 193 0.3x0.6y0.7 3y4x 193 0.8x0.4y3.9 4a9b13 3x8y19 8a5b10 2x

2、2y10 x9y 13 9m2b2 2y9x 13 -8m3b24 a5b1 8x2y5 6a3b14 3x2y8 5x4y 195 0.9x0.5y0.7 9y9x 195 0.3x0.4y3.5 8a9b18 4x4y15 5a b6 3x8y4 6x y 4 5m9b11 9y2x 4 -7m b28 a2b15 5x6y8 8a7b18 x7y5 x7y 197 0.5x0.3y3.4 4y9x 197 0.3x0.7y1.4 8a5b19 7x8y11 6a2b10 2x y15 9x8y 16 7m8b22 3y7x 16 -7m6b24 a5b8 x5y-7 5a4b5 9x2y

3、1 x5y 33 0.4x0.3y3.5 9y9x 33 0.1x0.1y2.3 2a5b16 8x4y8 6a3b5 3x7y7 8x8y 58 6m3b1 8y7x 58 -9m4b26 8a7b7 5x5y1 8a3b15 8x6y5 7x8y 32 0.1x0.7y2.2 3y5x 32 0.7x0.8y3.3 4a b3 x3y5 8a9b8 3x9y10 8x2y 90 7m4b8 y3x 90 -4m4b3 5a8b2 4x4y9 4a2b18 2x5y4 3x2y -3 0.9x0.4y3.7 3y2x -3 0.8x0.3y2.2 8a3b12 x3y7 8a7b12 3x5y6 7x5y 62 2m2b17 y3x 62 -4m5b10 8a6b14 7x8y-7 5a5b11 9x9y6 3x5y 160 0.6x0.6y2.8 6y6x 160 0.1x0.7y0.6 7a4b4 4x9y2 2a3b8 2x6y18 2x6y 134 5m6b0 4y7x 134 -5m7b2 9a4b9 7x4y10 2a9b9 7x6y-4 7x2y 166 0.9x0.1y2.9 2y7x 166 0.9x0.6y2