初二数学二元一次方程组专项练习题 52.docx

1、初二数学二元一次方程组专项练习题 52 a9b7 x y18 3a4b11 9x4y16 2x4y 3 3m2b5 4y3x 3 -7m b12 3a7b7 7x4y0 5a4b9 2x4y-8 9x3y 15 0.6x0.7y2.2 5y3x 15 0.9x0.8y2.2 9a9b17 9x y1 2a8b11 5x3y17 x5y 168 4m b16 6y7x 168 -4m9b0 3a9b10 3x7y1 5a b15 4x9y10 8x y 47 0.7x0.3y2.9 4y7x 47 0.5x0.7y2.7 5a3b16 3x2y18 8a7b16 6x6y20 4x2y 100

2、6m5b14 9y9x 100 -8m8b25 9a5b10 3x2y-10 a b17 4x4y-1 9x5y 56 0.2x0.9y0.5 4y7x 56 0.4x0.7y2.5 8a7b16 7x3y3 a8b15 8x9y2 4x6y 192 8m2b26 7y7x 192 -10m2b4 7a3b15 9x2y7 6a5b20 4x y-1 5x3y 17 0.4x0.4y3.2 8y2x 17 0.7x0.6y1 9a9b12 8x8y19 a4b17 3x8y1 7x9y 49 2m6b19 8y x 49 -7m3b11 4a5b8 5x7y-1 7a b18 8x5y6 3x

3、5y 164 0.3x0.1y0.9 9y6x 164 0.4x0.7y1.5 4a7b9 9x y11 7a5b20 4x6y12 7x4y 132 2m5b6 5y7x 132 -2m9b28 9a8b5 6x6y5 9a5b13 5x3y-9 5x5y 181 0.3x0.1y0.2 y8x 181 0.6x0.1y1.7 2a7b20 8x7y5 4a3b8 3x8y3 6x5y 118 7m b8 4y8x 118 -7m8b25 8a9b19 7x2y5 9a4b4 7x4y-1 4x7y 85 0.7x0.6y0.8 4y8x 85 0.9x0.7y3.6 3a2b16 8x3y11 3a5b7 9x3y5 5x2y 157 m3b16 3y8x 157 -6m2b22 8a3b20 9x7y-8 8a7b8 5x6y2 9x3y 3 0.7x0.8y2.4 6y8x 3 0.8x0.9y2 8a8b15 5x9y14 2a9b20 5x6y17 x8y 199 8m7b8 9y6x 199 -6m2b3 a5b18 5x7y-10 7a2b19 8x8y-4 x5y 100 0.6x0.2y1.5 2y9x 100 0.5x0.7y3.8