来自钱国荣的问题
解方程组:(1)y=2x−1x+2y=−7(2)8y+5x=−84y−3x=7.
解方程组:
(1)
y=2x−1x+2y=−7
(2)
8y+5x=−84y−3x=7.
1回答
2020-05-15 15:47
解方程组:(1)y=2x−1x+2y=−7(2)8y+5x=−84y−3x=7.
解方程组:
(1)
y=2x−1x+2y=−7
(2)
8y+5x=−84y−3x=7.
(1)
y=2x-1①x+2y=-7②