x,y满足2xy+x+y=83.x+y是何数?

x,y满足2xy+x+y=83.x+y是何数? 正数x,y满足x-y=2xy,求x-y/x+y的值. 正数x,y满足2x+y+6=xy,则xy的最小值是 已知x.y满足X2-y2=2xy.则x-y/x+y=?x. 若正数x,y满足xy-(x+y)=1,则x+y的最小值是 |x.y是有理数且xy满足条件|x|=5|y|=2|x-y|=y-x.求x+2y的值 x.y是有理数且xy满足条件|x|=5|y|=2|x-y|=y-x.求x+2y的值 已知xy满足约束条件y=2 2X+y 若实数x,y满足x^2-xy-y^2 =0,则x/y=? 整数x,y满足方程2xy+x+y=83,则x+y怎么算 若正实数x.y满足x+y=xy,则x+2y的最小值 整数x,y满足x2-y2=2xy,求x-y/x+y的值 已知正整数x,y满足：xy-x-y=0,则x+2y的最小值 若正整数X,Y满足2X+Y--XY=0,求X+Y的最小值 正整数x,y满足x2-y2=2xy,求x-y/x+y的值 已知正数x,y满足2x+8y-xy=0,x+y的最小值 实数x,y满足x^2+y^2=4,则x+y-xy的最大值是? 若实数x,y满足x^2+y^2+xy=1,则x+y的最大值是