初中分式题如图x/(x-y)=2,求x^2+xy/x(x-y)如图

初中数学分式已知x/y=2,求（x*x-xy+3y*y）/x*x+xy+6y*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. 若y-x/xy=3,求分式2x+3xy-2y/x-2xy-y 已知x+2y=0,求分式2xy+y^2/x^2-xy 已知2x-3y=0,求分式x^2+xy-y^2/2x^2+xy-y^2 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 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. 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3x-2xy+3y/x+xy+y的值