简算:(2009+1/2007)*1/2008

问题描述:

简算:(2009+1/2007)*1/2008

(2009+1/2007)*1/2008
=(2008+1+1/2007)*1/2008
=(2008+2008/2007)*1/2008
=2008*1/2008+2008/2007*1/2008
=1+1/2007
=2008/2007