问题标题:
5/9*79又16/17+50*1/9+1/9*5/17要求用简便运算,
问题描述:

5/9*79又16/17+50*1/9+1/9*5/17

要求用简便运算,

胡朝晖回答:
  5/9*79又16/17+50*1/9+1/9*5/17   =5/9*(79+16/17)+50*1/9+5/9*1/17   =5/9*(79+16/17+1/17)+50*1/9   =5/9*80+50*1/9   =50*8/9+50*1/9   =50
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