问题
填空题
化简:(1)
(2)(2xy-y)-(-y+xy)=______. |
答案
(1)
(2x-4y)+2y=x-2y+2y=x;1 2
(2)(2xy-y)-(-y+xy)=2xy-y+y-xy=xy.
化简:(1)
(2)(2xy-y)-(-y+xy)=______. |
(1)
(2x-4y)+2y=x-2y+2y=x;1 2
(2)(2xy-y)-(-y+xy)=2xy-y+y-xy=xy.