计算,能简算的要简算:4/27+5/8-1/5

问题描述:

计算,能简算的要简算:4/27+5/8-1/5

619/1030

4/27+5/8-1/5
=4/27+(25/40-8/40)
=4/27+17/40
=21/1080
=7/360