|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002| 要|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 13:54:25
|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002| 要|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
xN@_H gFt~UbLL0hbԥL\0 cEW-7pusޓaa;67b-$8n4+-:׬c l{󻝊8pUN/ZUo07^0"

|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002| 要|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002| 要
|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|

|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002| 要|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|

1/2004<1/2003<1/2002,
所以,1/2003-1/2002<0,1/2004-1/2003<0,1/2004-1/2002<0
所以,
|1/2003-1/2002|+|1/2004-1/2003|-|1/2004-1/2002|
=-(1/2003-1/2002)-(1/2004-1/2003)+(1/2004-1/2002)
=-1/2003+1/2002-1/2004+1/2003+1/2004-1/2002
=0
望采纳

先去绝对值符号