若2x-3y=0(x≠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? 已知|3x-y|+|x+y|=0,求x-y除以x*y的值. 若2x-3y=0(x不等于0),试求(x+y)/(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? 若|x+y-1|+（x-y-2)²=0,求代数式（x+2y)(x-2y）-（2x-y)(-y-2x)的值. 若实数x≠y,且x的平方-2x+y=0,y的平方-2y=X=0,求x+y的值. 若x^5+x^4y+x^4+x+y+1=0,且3x+2y=1,求x,y的值 已知x-3y=0(y≠0)求2x+5y/3x-2y的值 已知x^2+3xy-4y^2=0(y≠0),求x-y/x+y的值. 若x^2+y^2-8x-10y+41=0,求x/y+y/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.