5/17除以9/8+1/9*5/17=多少
问题描述:
5/17除以9/8+1/9*5/17=多少
答
5/17÷9/8+1/9×5/17
=5/17×8/9+1/9×5/17
=5/17×(8/9+1/9)
=5/17×1
=5/17