若lx-2l+ly+1l=0,则x=_____________,y=_____________

问题描述:

若lx-2l+ly+1l=0,则x=_____________,y=_____________

X=2;Y=-1
这题太难了

若lx-2l+ly+1l=0
x-2=0
y+1=0
x=2
y=-1