(m+2n/n-m)+(n/m-n)-(2m/n-m)
问题描述:
(m+2n/n-m)+(n/m-n)-(2m/n-m)
答
原式=(m+2n)/(n-m)-n/(n-m)-2m/(n-m)
=(m+2n-n-2m)/(n-m)
=(n-m)/(n-m)
=1