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Ta co:
\(\frac{58}{89}< \frac{58}{87}=\frac{2}{3}=\frac{36}{54}< \frac{36}{53}\)
Hay :\(\frac{58}{89}< \frac{36}{53}hay\frac{36}{53}>\frac{58}{89}\)
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Ta có : \(\frac{2003.2004-1}{2003.2004}=\frac{2003.2004}{2003.2004}-\frac{1}{2003.2004}=1-\frac{1}{2003.2004}\)
\(\frac{2004.2005-1}{2004.2005}=\frac{2004.2005}{2004.2005}-\frac{1}{2004.2005}=1-\frac{1}{2004.2005}\)
Vì \(\frac{1}{2003.2004}>\frac{1}{2004.2005}\)
Nên : \(\frac{2003.2004-1}{2003.2004}< \frac{2004.2005-1}{2004.2005}\)
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a. \(\frac{26}{42}< \frac{56}{78}\)
b.\(\frac{58}{89}< \frac{36}{53}\)
c.\(\frac{1530}{1632}>\frac{1414}{1515}\)
d.\(\frac{-373737}{515151}>\frac{-1111}{1212}\)
k cho mk nha!!!!
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11/32=0,34375;16/49=0.3265306122
vay 11/32 > 16/49
58/89=0,6516853933;36/53=0,679246283
vay 58/89 < 36/53