2.25×五分之四+2.75÷一又二分之一+0.6

问题描述:

2.25×五分之四+2.75÷一又二分之一+0.6

2.25×五分之四+2.75÷一又二分之一+0.6
=1.8+11/6+0.6
=2又2/5+11/6
=4又7/30