(2012+1/2011)/(2011+1/2012)+(2010+1/2011)/(2011+1/2010）的简便方法
(2012+1/2011)/(2011+1/2012)+(2010+1/2011)/(2011+1/2010）的简便方法
数学人气：543 ℃时间：2020-03-28 20:03:03
优质解答
(2012+1/2011)/(2011+1/2012)+(2010+1/2011)/(2011+1/2010）=﹛(2011×2012+1﹚/2011﹜×﹛2012/(2011×2012+1﹚﹜＋﹛(2010×2011+1﹚/2011﹜×﹛2010/(2010×2011+1﹚﹜=2012/2011+2010/2011=2×2011/2011=2...
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