|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007|
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/22 00:13:22
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007||1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007||1/3-1
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007|
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007|
|1/3-1/2|+|1/4-1/3|+|1/5-1/4|+.+|1/2008-1/2007|
=1/2-1/3+1/3-1/4+1/4-1/5+1/2007-1/2008
=1/2-1/2008
=1003/2008