(2007-1)×2007分之2008-1 等于几,是等于2006吗
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(2007-1)×2007分之2008-1 等于几,是等于2006吗
![(2007-1)×2007分之2008-1 等于几,是等于2006吗](/uploads/image/z/5120833-49-3.jpg?t=%EF%BC%882007-1%EF%BC%89%C3%972007%E5%88%86%E4%B9%8B2008-1+%E7%AD%89%E4%BA%8E%E5%87%A0%2C%E6%98%AF%E7%AD%89%E4%BA%8E2006%E5%90%97)
(2007-1)×(2008/2007)-1
=2007×2008/2007-1×2008/2007-1
=2008-2008/2007-1
=2008-1-1//2007-1
=2006-1/2007
=2005又2006/2007
(2007-1)×(2008-1)/2007
=2006×1
=2006
=2007×2008/2007-1×2008/2007-1
=2008-2008/2007-1
=2008-1-1//2007-1
=2006-1/2007
=2005又2006/2007
(2007-1)×(2008-1)/2007
=2006×1
=2006