x-y与y/x-y通分

x-y与y/x-y通分 2xy/(x+y)(x+y)与x/(x+y)(x-y)怎么通分 x/ab与y/bc怎么通分? 通分x/3y与3x/2y^2 x+y分之一与x-y分之一通分, 通分x/3y与3x/2y^2 x/xy-y²与y/x²-xy 通分 通分：x+y/1与x-y/1 1/(x-y)与1/(y-x)通分 x+y/x-y和y+x/y-x通分 y/x(x+y),x/y(x-y)通分 x-y和y-x通分 分式的通分：2xy/(x+y)^2与x/(x^2+y^2)分式通分, x(x-y)的平方分之y与（y-x）的立方分之x通分, 通分题!通分：x/3y 与 3x/2y^2 通分:-x/a(x-y) ,y/b(y-x) 通分x/a(x-y),y/b(y-x) 通分 a/(y-x)^2,b/(x-y)(x+y)