已知1/x-1/y=2,求分式5x+xy-5y/2x-xy-2y的值

已知1/x-1/y=5,求分式2x+5xy-2y/3x-xy-3y 已知1/x-1/y=5,求分式y+xy-x/2x+7xy-2y的值. 已知1/x-1/y=5 求分式-x+xy+y/2x+7xy-2y 已知1/X-1/y=5,求分式(y+xy-x)/(2x+7xy-2y)的值 解一道分式题已知1/x-1/y=3 求分式(4x-5xy-4y)/(3x-2xy-3y)的值. 已知1/x-1/y=5、求分式3x+5xy-3y/y-xy-x的值 已知1/x-1/y=3,求分式(2x+3xy-2y)/(x-2xy-y) 已知1/x+1/y=3,求分式3x-2xy+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=2001,求分式x-xy-y/x-y的值 已知1/x-1/y=2,求分式5x+xy-5y/2x-xy-2y的值 已知1/x+1/y=5,求分式2x-3xy+2y/x+2xy+y的值 已知1/x-1/y=5,求分式2x+3xy-2y/x-2xy-y的值 如题.已知:X^-1+Y^-1=5,求分式(2X-XY+2Y)/(X+2XY+Y)的值.要有具体步骤. 已知x的-1次方+y的-1次方=5,求分式(2x-xy+2y)/(x+2xy+y)的值. 已知1/x+1/y=2,求分式3x+7xy+3y/2x-5xy+2y的值 已知x分之1+y分之1=2,求分式2x-5xy+2y分之3x+7xy+3y的值. 已知1/x+1/y=2,求分式3x-7xy+3y/2x-5xy+2y的值