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a = 2004 x (4+1+1+1+1)
=2004 x 8=16032
b = 1995 x (1+1+3)
= 1995 x 5 =9975
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a) \(\frac{2005.2007-1}{2004+2005.2006}=\frac{\left(2014+1\right).2007-1}{2004+2005.2006}=\frac{2004+2005.2007-1}{2004+2005-2006}=\frac{2004+2005.2006}{2004+2005.2006}=1\)
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Ta có:\(A=2004\times15+2004\times6-2004\)
\(=2004\times\left(15+6-1\right)\)
\(=2004\times\left(21-1\right)=2004\times20\)
\(< 20\times2005=B\)
Nên \(A< B\)
a) 2005*2007-1 b)2003*2004+2005*10+1994
2004+2005*2006 2005*2004-2003*2004
c) ( 5+3/8+18+1/2-7-5/24 )
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c) 5 + \(\frac{3}{8}\)+18 + \(\frac{1}{2}\) - 7 - \(\frac{5}{24}\)
=\(\frac{43}{8}\)+ \(\frac{35}{2}\) +\(\frac{163}{24}\)
=\(\frac{129}{24}\)+ \(\frac{420}{24}\)+\(\frac{163}{24}\)
= \(\frac{58}{51}\)
k nhé
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625
24048
\(25.25=25^2=625\)
\(2004\left(4+7\right)+2004\)
\(=2004\left(4+7+1\right)\)
\(=2004.12=24048\)