计算:2007÷20072007/2008+1/2009.
问题描述:
计算:2007÷2007
+2007 2008
. 1 2009
答
2007÷2007
+2007 2008
1 2009
=2007×
+2008 2007×2008+2007
.1 2009
=2007×
+2008 2007×(2008+1)
1 2009
=
+2008 2009
1 2009
=1.