数学题:5/9+7/9-1.625-2.375+3
问题描述:
数学题:5/9+7/9-1.625-2.375+3
答
5/9+7/9-1.625-2.375+3
=(5+7)/9-(1.625+2.375)+3
=12/9-4+3
=4/3-1
=1/3