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-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 若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值 已知x-y/xy=3,求分式2x+3xy-2y/x-2xy-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. 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xy/x+y=二分之一,求分式3x-xy+3y/x-xy+y的值 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(y+xy-x)/(2x+7xy-2y)的值 已知1/x-1/y=3,求分式(2x+3xy-2y)/(x-2xy-y)