(3x -1)+(2-5x)去括号
问题描述:
(3x -1)+(2-5x)去括号
答
3x-1+2-5x
=-2x+1
答
(3x -1)+(2-5x)=3x-1+2-5x=-2x+1
答
(3x -1)+(2-5x)
=3x-1+2-5x
=-2x+1