25/31-25/31X99/100怎么简便算

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25/31-25/31X99/100怎么简便算25/31-25/31X99/100怎么简便算25/31-25/31X99/100怎么简便算=25/31*(1-99/100)=25/31*1/100=1

25/31-25/31X99/100怎么简便算
25/31-25/31X99/100怎么简便算

25/31-25/31X99/100怎么简便算
=25/31*(1-99/100)
=25/31*1/100
=1/124