化简(y-x/1)除以(x-y/1)的结果是

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化简(y-x/1)除以(x-y/1)的结果是化简(y-x/1)除以(x-y/1)的结果是化简(y-x/1)除以(x-y/1)的结果是(y-1/x)/(x-1/y)=[(xy-1)/x]/[(xy-1)

化简(y-x/1)除以(x-y/1)的结果是
化简(y-x/1)除以(x-y/1)的结果是

化简(y-x/1)除以(x-y/1)的结果是
(y-1/x)/(x-1/y)=[(xy-1)/x]/[(xy-1)/y]=[(xy-1)/x]*[y/(xy-1)]=y/x