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|1/2011-1/2010|+|1/2011-1/2012|-|1/2012-1/2010|
如题1/2011-1/2010的绝对值加1/2011-1/2012的绝对值减1/2012-1/2010的绝对值
人气:331 ℃ 时间:2019-12-11 03:42:46
解答
|1/2011-1/2010|+|1/2011-1/2012|-|1/2012-1/2010|
=-(1/2011-1/2010)+(1/2011-1/2012)-(-1/2012+1/2010)
=-1/2011+1/2010+1/2011-1/2012+1/2012-1/2010
=0
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