已知|x+3|+(x+2y-1)2=0,则x+y=_.

问题描述:

已知|x+3|+(x+2y-1)2=0,则x+y=______.

∵|x+3|+(x+2y-1)2=0,
∴x+3=0,x-2y-1=0,
x=-3,y=-2,
x+y=-3+(-2)=-(3+2)=-5,
故答案为:-5