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a. kết quả = 401/402
b. Ta có: 1-2004/2009=5/2009 , 1--2005/2010=5/2010 . Vì 5/2009 > 5/2010 nên 2004/2009 < 2005/2010.
Đấy phần b. mk ko quy đồng nha!
Nhớ Tích cho mk đấy
![](https://rs.olm.vn/images/avt/0.png?1311)
`2007/2009×2002/2005×2009/2006×2005/2007×2006/2002`
`=(2007xx2002xx2009xx2005xx2006)/(2009xx2005xx2006xx2007xx2002)`
`=(2007xx2002xx2009xx2005xx2006)/(2007xx2002xx2009xx2005xx2006)`
`=1`
\(\dfrac{2007}{2009}.\dfrac{2002}{2005}.\dfrac{2009}{2006}.\dfrac{2005}{2007}.\dfrac{2006}{2002}\\ =\left(\dfrac{2007}{2009}.\dfrac{2009}{2006}\right).\left(\dfrac{2006}{2002}.\dfrac{2002}{2005}\right).\dfrac{2005}{2007}\\ =\dfrac{2007}{2006}.\dfrac{2006}{2005}.\dfrac{2005}{2007}=1\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có:
2006/2007 + 2007/2008 + 2008/2009 + 2009/2006
= 1 - 1/2007 + 1 - 1/2008 + 1 - 1/2009 + 1 + 3/2006
= (1 + 1 + 1 + 1) - (1/2007 + 1/2008 + 1/2009) + 3/2006
= 4 - (1/2007 + 1/2008 + 1/2009) + 3/2006
Vì 1/2007 < 1/2006
1/2008 < 1/2006
1/2009 < 1/2006
=> 1/2007 + 1/2008 + 1/2009 < 3/2006
=> -(1/2007 + 1/2008 + 1/2009) + 3/2006 > 0
=> 4 - (1/2007 + 1/2008 + 1/2009) + 3/2006 > 4 - 0 = 4
=> 2006/2007 + 2007/2008 + 2008/2009 + 2009/2006 > 4
Ta có:
2006/2007 + 2007/2008 + 2008/2009 + 2009/2006
= 1 - 1/2007 + 1 - 1/2008 + 1 - 1/2009 + 1 + 3/2006
= (1 + 1 + 1 + 1) - (1/2007 + 1/2008 + 1/2009) + 3/2006
= 4 - (1/2007 + 1/2008 + 1/2009) + 3/2006
Vì 1/2007 < 1/2006
1/2008 < 1/2006
1/2009 < 1/2006
=> 1/2007 + 1/2008 + 1/2009 < 3/2006
=> -(1/2007 + 1/2008 + 1/2009) + 3/2006 > 0
=> 4 - (1/2007 + 1/2008 + 1/2009) + 3/2006 > 4 - 0 = 4
=> 2006/2007 + 2007/2008 + 2008/2009 + 2009/2006 > 4
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x = 5 y = 36
( 18 / 21 + 3 / 21 ) + ( 19 / 32 + 13 / 32 ) + ( 75 / 100 + 1 / 4 )
= 1 + 1 + 1 = 3
2008/2009 > 2010/2011 ; 1999/2001 < 12/11 ;2007/2006> 2006/2007 ; 101/100 >100/101
1.
x = 5
y = 36
2.
( 18 / 21 + 3 / 21 ) + ( 19 / 32 + 13 / 32 ) + ( 75 / 100 + 1 / 4 ) = 1 + 1 + 1 = 3
3.
> ; < ; > ; >
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Em nên gõ công thức trực quan để được hỗ trợ tốt nhất nhé
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)
\(\dfrac{567}{394}:\dfrac{143}{12}+26\) bang so nha moi nguoi