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简算2000/2000又 2000/2001
人气:415 ℃ 时间:2020-03-28 05:59:30
解答
=2000/(2000+2000/2001)
=2000/[2000×(1+1/2001)]
=1/(1+1/2001)
=1/(2002/2001)
=2001/2002
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