6/5-8/3+（-2又8/7）等于多少?

Question

6/5-8/3+（-2又8/7）等于多少?

Answer 1

分子分母弄反了
6/5应该是5/6(6分之5吧?)
5/6-3/8+(-2又7/8)
=5/6-(3/8+2又7/8)
=5/6-3又1/4
=-(3又3/12-10/12)
=-2又5/12(-2又12分之5)