2008÷2008又2008/2009+1/2010
=2008÷(2008×2009+2008)/2009+1/2010
=2008÷[2008×(2009+1)/2009]+1/2010
=2008÷(2008×2010)/2009+1/2010
=2008×2009/(2008×2010)+1/2010
=2009/2010+1/2010
=1
2008÷2008又2008/2009+1/2010
=2008÷(2008×2009+2008)/2009+1/2010
=2008÷[2008×(2009+1)/2009]+1/2010
=2008÷(2008×2010)/2009+1/2010
=2008×2009/(2008×2010)+1/2010
=2009/2010+1/2010
=1