13.85减5分之17加50分之3减5分之3等于多少
问题描述:
13.85减5分之17加50分之3减5分之3等于多少
答
13.85-17/5+3/50-3/5
=13+85/100-3-2/5+3/50-3/5
=13-3+85/100-2/5-3/5+3/50
=10-1+85/100+6/100
=9+91/100
=9(91/100)