3/4*1/9+1/4/9 简便运算
问题描述:
3/4*1/9+1/4/9 简便运算
答
3/4*1/9+1/4/9
=3/4*1/9+1/4*1/9
=(3/4+1/4)*1/9
=1*1/9
=1/9