8分之7÷9×5分之3÷72分之35 (能简便,就简便)

问题描述:

8分之7÷9×5分之3÷72分之35 (能简便,就简便)

7/8÷9*3/5÷35/72
=7/8*1/9*3/5*72/35
=7/72*3/5*72/35
=7*3/5*1/(5*7)
=3/5*1/5
=3/25