计算:251/2008×2009+251/2009×2010=_.
问题描述:
计算:
+251 2008×2009
=______. 251 2009×2010
答
+251 2008×2009
,251 2009×2010
=251×(
+1 2008×2009
),1 2009×2010
=251×(
-1 2008
+1 2009
-1 2009
),1 2010
=251×
,2 2008×2010
=
;1 8040
故答案为:
.1 8040