4/5×(5/3+2.5)-0.65/13/6简算

问题描述:

4/5×(5/3+2.5)-0.65/13/6简算

4/5×(5/3+2.5)-0.65/13/6
=4/5×5/3+4/5×2.5-0.65×6/13
=4/3+2-0.3
=3又1/3-3/10
=3又1/30