|x-2|+|y-3|=0,求x+y的值

已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 已知|3x-y|+|x+y|=0,求x-y除以x*y的值. y=3(x-y),x=2(x-y)求x,y的值 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 已知x-3y=0,求（2x+y)/(x^2-2xy+y^2)*(x-y)的值已知x-3y=0,求（2x+y)/(x^2-2xy+y^2)*(x-y)的值 x^2+xy-2y^2=0,求3x-y/x+y的值 已知|2x-3y|+|3x-y-1|=0,求x,y的值. 已知4x-2y=0,求x-y/3x+2y的值 已知x=2y,求2x-y分之x-3y的值.0 已知|x+y|+(x-y+3)^2=0,求x,y的值 (x+y-5)+|3y-2x+10|=0,求 x,y的值 若／X+Y-9／+（2X-Y+3)=0求X与Y的值 x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值 已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值? 已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)*(x-y)的值. 已知x-3y=0,求2x+y/x-2xy+y乘(x-y)的值 已知y-2x=0,求3x²-2y²/(x+y)(x-y)的值 若X,Y互为相反数,且(X+Y+3)(X-Y-2)=0,求X,Y的值?