一道初一的数学题....

来源：百度知道 编辑：UC知道 时间：2024/05/21 13:48:13
|1/2008-1/2007|+|1/2009-1/2008|-|1/2009-1/2007|
=?
急啊~~~~~~~~

|1/2008-1/2007|+|1/2009-1/2008|-|1/2009-1/2007|
=(1/2007-1/2008)+(1/2008-1/2009)-(1/1007-1/2009)
=1/2007-1/2008+1/2008-1/2009-1/1007+1/2009
=0
参考资料：仅供参考，祝您学习进步！

绝对值符号可以去掉，注意换位就行了！

|1/2008-1/2007|+|1/2009-1/2008|-|1/2009-1/2007| =1/2007-1/2008
+1/2008-1/2009-(1/2007-1/2009)=0