8/38*5.7+2.5/3 简便计算
问题描述:
8/38*5.7+2.5/3 简便计算
答
8/38*5.7+2.5/3
=5.7/38*8+2.5/3
=1.5*8+2.5/3
=12+5/6
=12又5/6