若|x-3|+|y-2|=0,试求2x+y的值

若2x-3y=0(x不等于0),试求(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? 若|x+y-1|+（x-y-2)²=0,求代数式（x+2y)(x-2y）-（2x-y)(-y-2x)的值. 若x-y/x+y=5,求x-y/2x+2y+5x+5y/3x-3y的值 .若|x-y|+|y-3|=0,求2x+y的值. 1.若|x-y|+|y-3|=0,求2x+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? 若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,求x,y的值 若x^2+y^2+2x-8y+17=0试求（x-3y)^2-(x+3y)^2的值 若x-y不等于0,2x-3y=0,试求分式x-y分之2x-4y的值 已知4x-2y=0,求x-y/3x+2y的值 已知|2x-3y|+|3x-y-1|=0,求x,y的值.