1/4+5/12+1/3用简便运算
问题描述:
1/4+5/12+1/3用简便运算
答
1/4+5/12+1/3
=(1/4+1/3)+5/12
=7/12+5/12
=1
答
先通分:3/12+5/12+4/12=12/12=1