(2007×2009+2008)÷(2008×2009-1)怎样简算

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/20 22:36:07
(2007×2009+2008)÷(2008×2009-1)怎样简算
xMn0"!c;UM{RW[=[]5PTn

(2007×2009+2008)÷(2008×2009-1)怎样简算
(2007×2009+2008)÷(2008×2009-1)怎样简算

(2007×2009+2008)÷(2008×2009-1)怎样简算
(2007×2009+2008)÷(2008×2009-1)
=(2007×2009+2009-1)÷(2008×2009-1)
=[(2007+1)×2009-1)]÷(2008×2009-1)
=(2008×2009-1)÷(2008×2009-1)
=1