x-3y-2=0 3x+2y-17=0
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)X(x-y)
已知3x^2+xy-2y^2=0,求{(x+y)/(x-y)+4xy/(y^2-x^2)}/{(x+3y)*(x-y)}
如果分式3x-6y/x+y=0,那么x,y 应满足 A、x=2y B、x≠-y C、x=2y且x≠-y D、x=2y且y
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
x^3y+y^3-2x=0求导,
若3x-4y=0,则x/y=______,(x-y)/y=______,(3x+2y)/(2x+3y)=_____.
{2x+y/3-2y=0 2(2x+y)-5=7y
设实数X,Y满足2X+Y-2>=0,X-2Y+4>=0,3X-Y
已知x^2-3y^2=2xy(x>0,y>0),求代数式x+2y/x-y
若x,y满足|2x-y-3|+|3x+2y+1|=0,则x= y=