递等式计算:7/11*(1.2+2/3)*11/7

问题描述:

递等式计算:7/11*(1.2+2/3)*11/7

15/28

7/11*(1.2+2/3)*11/7
=(6/5+2/3)*7/11*11/7
=(18/15+10/15)*1
=28/15