9又3/5+99又3/5+999又3/5+9999又3/5+99999又3/5

日期:2015-12-12 12:51:51 人气:1

9又3/5+99又3/5+999又3/5+9999又3/5+99999又3/5

9又3/5+99又3/5+999又3/5+9999又3/5+99999又3/5 =10-2/5+100-2/5+1000-2/5-10000-2/5+100000-2/5 =111110-5X2/5 =111110-2 =111108
    A+
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