2007+2008×2006分之2007×2008-1
问题描述:
2007+2008×2006分之2007×2008-1
答
(2007×2008-1)/(2007+2008×2006)
=(2006×2008+2008-1)/(2007+2008×2006)
=(2006×2008+2007)/(2007+2008×2006)
=1