5/6-1/12+1/4-5/12= 简便算法
问题描述:
5/6-1/12+1/4-5/12= 简便算法
答
5/6-1/12+1/4-5/12
=10/12-1/12+3/12-5/12
=(10-1+3-5)/12
=7/12