(2x/x-y)+(x+2)/(y-x)(y-x)=?
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(2x/x-y)+(x+2)/(y-x)(y-x)=?(2x/x-y)+(x+2)/(y-x)(y-x)=?(2x/x-y)+(x+2)/(y-x)(y-x)=?(2x/x-y)+(x+2)/(y-x
(2x/x-y)+(x+2)/(y-x)(y-x)=?
(2x/x-y)+(x+2)/(y-x)(y-x)=?
(2x/x-y)+(x+2)/(y-x)(y-x)=?
(2x/x-y)+(x+2)/(y-x)(y-x)=2X(x-y)/(x-y)+（x+2）/(x-y) =(2x-2xy+x+2)/(x-y)
求采纳
2x/x-y)+(x+2)/(y-x)(y-x) =2X(x-y)/(x-y)+（x+2）/(x-y) =(2x-2xy+x+2)/(x-y) 这就是最简了！
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