问题标题:
(X+Y分之X+X+Y分之2Y)乘X+2Y分之XY除以(X分之1+Y分之1)要有过程
问题描述:
(X+Y分之X+X+Y分之2Y)乘X+2Y分之XY除以(X分之1+Y分之1)要有过程
连瑞梅回答:
原式=[(x+2y)/(x+y)][xy/(x+2y)]÷[(x+y)/xy]
=[xy/(x+y)]×xy/(x+y)
=x²y²/(x+y)²
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