1999/(1999+1999/2000)怎样简便运算

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1999/(1999+1999/2000)怎样简便运算1999/(1999+1999/2000)怎样简便运算1999/(1999+1999/2000)怎样简便运算=1999/[1999×(1+1/20

1999/(1999+1999/2000)怎样简便运算
1999/(1999+1999/2000)怎样简便运算

1999/(1999+1999/2000)怎样简便运算
=1999/[1999×(1+1/2000)]
=1/(2001/2000)
=2000/2001

1999/(1999+1999/2000)
同除1999得
1/(1+1/2000)
=2000/2001

1999/(1999+1999/2000)
=1999/[1999(1+1/2000)]
=1÷ (1+1/2000)
=1÷2001/2000
=2000/2001


如果帮到你,请记得采纳,O(∩_∩)O谢谢

小学5年级的奥数

=1999/[1999×(1+1/2000)]
=1/(2001/2000)
=2000/2001