先去括号,再合并同类项:(2x-5y)-(3x-5y+1)
问题描述:
先去括号,再合并同类项:(2x-5y)-(3x-5y+1)
答
-×-1
答
(2x-5y)-(3x-5y+1)
=2x-5y-3x+5y+1
=-x+1
楼主,你在糊弄别人的智商吗?????
答
-X-1
答
(2x-5y)-(3x-5y+1)
=2x-5y-3x+5y+1
=-x+1
答
(2x-5y)-(3x-5y+1)
=2x-5y-3x+5y-1
=-x-1