(1+1/2+ +1/2007)x(1/2+1/3+ +1/2008)-(1+1/2+ +1/2008)x(1/2+1/3+ +1/2007)=?

来源：学生作业帮助网编辑：作业帮时间：2024/05/03 11:01:30

(1+1/2+ +1/2007)x(1/2+1/3+ +1/2008)-(1+1/2+ +1/2008)x(1/2+1/3+ +1/2007)=?
(1+1/2+ +1/2007)x(1/2+1/3+ +1/2008)-(1+1/2+ +1/2008)x(1/2+1/3+ +1/2007)=?

(1+1/2+ +1/2007)x(1/2+1/3+ +1/2008)-(1+1/2+ +1/2008)x(1/2+1/3+ +1/2007)=?
=（1+1/2+ +1/2007)x1/2008-(1/2+1/3+ +1/2007)x1/2008
=(1+1/2+ +1/2007-1/2-1/3- -1/2007)x1/2008
=1x1/2008
=1/2008