如果1/x-1/y=1,则分式y-x/x-xy-y=
已知1/x-1/y=2001,求分式x-xy-y/x-y的值
若xy=x-y≠0,则分式1y−1x=( )
已知1/x-1/y=2010,则分式(x+2xy-y)/(x-y)的值为多少?
若实数x,y满足1/x-1/y=5,则分式3x-2xy-3y/x+xy-y的值等于?
已知1/x+1/y=3,求分式3x-2xy+3y/x+xy+y的值
1/x+1/y=3.求分式3x-2xy+3y/x+xy+y的值
已知1/x+1/y=3,求分式(3x-3xy+3y)/(x+xy+y)的值
已知1/x-1/y=3,求分式3x-xy+3y/x+xy+y的值.
已知,1/x+1/y=5.,求分式3x+xy+3y/x-2xy+y的值
已知1/x-1/y=3,求分式(2x+3xy-2y)/(x-2xy-y)
若X/1-y/1=3 求分式:x-2xy-y/2x+3xy-2y
1/x-1/y=4,求分式(3x+xy-3y)/(x-2xy-y)