计算:-(-3又1/2)-(+5/6)-(-2又3/4)

问题描述:

计算:-(-3又1/2)-(+5/6)-(-2又3/4)

计算:
-(-3又1/2)-(+5/6)-(-2又3/4)
=(3又1/2+2又3/4)-5/6
=6又1/4-5/6
=5又5/12