简便计算

题目

简便计算
3.75-(4分之3+15分之17)                    6分之5+(1.3-6分之5)

答案

3.75-(3/4+17/15)
=3.75-0.75-17/15
=3-17/15
=28/15
5/6+(1.3-5/6)
=5/6-5/6+1.3
=1.3