8又1/4-2又3/5+1.75-2又2/5简算

问题描述:

8又1/4-2又3/5+1.75-2又2/5简算

8又1/4-2又3/5+1.75-2又2/5
=(8又1/4+1.75)-(2又3/5+2又2/5)
=(8又1/4+1又3/4)-5
=10-5
=5