已知实数x,y满足x-y+2≥0,x+y-4≥0,2x-y-5≤0,则3x+2y的最大值为

已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知实数x,y满足不等式组：2x-y=0,x+2y 已知实数x,y满足{x=>0,y 已知实数x,y满足{x=>0,y 已知实数x,y满足：y 已知实数x.y满足(x+2)^2+y^2( 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 已知实数x,y满足不等式组x≥0,y≥0,x+y≤1,则x^2+y^2-2x-2y的最小值 已知实数x,y满足x-ay-1>=0,2x+y>=0,x 已知实数x,y满足约束条件x+y>3,y 已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x. 已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y 已知实数x,y满足条件x≥0,y≥x,3x+4y≤12,则(x+2y+3)/(x +1)的最大值是 已知实数x,y满足条件 y≤0,y≥x,2x+y+4≥0,则z=x+3y的最小值是 已知实数x,y满足2x-y≤2,y≤x,y≥0,则（y-1)/(x+1)的最大值是?