已知A+2(x-xy+y)=2x+3y,则A=————————
问题描述:
已知A+2(x-xy+y)=2x+3y,则A=————————
答
Y + 2 X Y = A
答
A=y+2xy
答
A=2x+3y-2(x-xy+y)
=2x+3y-2x+2xy-2y
=y+2xy
答
我很无聊!!!
A=2x+3y-2(x-xy+y)
=2x+3y-2x+2xy-2y
=y+2xy