1+1/2007X1/2008-1/2007+1/2008
问题描述:
1+1/2007X1/2008-1/2007+1/2008
答
1+1/2007×1/2008-1/2007+1/2008
=1+1/2007×1/2008-(1/2007-1/2008)
=1+1/2007×1/2008-1/2007×1/2008
=1