2.25×3/5+2.75÷5/3简算

问题描述:

2.25×3/5+2.75÷5/3简算

2.25×3/5+2.75÷5/3
=2.25×3/5+2.75×3/5
=3/5×(2.25+2.75)
=3/5×5
=3