(2x+3y)-(5x-y)去括号
问题描述:
(2x+3y)-(5x-y)去括号
答
2x+3y-5x+y=4y-3x
答
=2x+3y-5x+y=-3x+4y
(2x+3y)-(5x-y)去括号
2x+3y-5x+y=4y-3x
=2x+3y-5x+y=-3x+4y