23/25*16/17+16/25*1/17
问题描述:
23/25*16/17+16/25*1/17
答
23/25*16/17+16/25*1/17
=16/17*(23/25+1/25)
=16/17*24/25
=384/425那1/17板不用乘了么?谢谢