计算：|1\2005-1\2004|+|1\2004-1\2003|-|1\2005-1\2003|

来源：学生作业帮助网编辑：作业帮时间：2024/10/03 01:31:49

$计算：|1\2005-1\2004|+|1\2004-1\2003|-|1\2005-1\2003|$

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计算：|1\2005-1\2004|+|1\2004-1\2003|-|1\2005-1\2003|
计算：|1\2005-1\2004|+|1\2004-1\2003|-|1\2005-1\2003|

计算：|1\2005-1\2004|+|1\2004-1\2003|-|1\2005-1\2003|
l1/2005-1/2004l+l1/2004-1/2003l-l1/2005-1/2003l
=(1/2004-1/2005)+(1/2003-1/2004)-(1/2003-1/2005)
=1/2004-1/2005+1/2003-1/2004-1/2003+1/2005
=0