|1\4-1\2|+|1\6-1\4|+|1\8-1\6|+……|1\2006-1\2004|+|1\2008-1\2006|怎么做?\是几分之几.

问题描述:

|1\4-1\2|+|1\6-1\4|+|1\8-1\6|+……|1\2006-1\2004|+|1\2008-1\2006|怎么做?
\是几分之几.

1003\2008