17/25*29/37+18/25*13/37=?简便算法

问题描述:

17/25*29/37+18/25*13/37=?简便算法

17/25*29/37+18/25*13/37
=1/25*1/37*(17*29+18*13)
=1/25*1/37*(493+234)
=1/25*1/37*727
=727/925