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\(\frac{2012+2013+2014}{2014\cdot2015+2016}=1\)
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\(\frac{2015.2014-1}{2013.2015+2014}=\frac{2015.2014+\left(2014-1\right)}{2013.2015+2014}=\frac{2015.2014+2013}{2013.2015+2014}=1\)
\(=\frac{2015\times\left(2013+1\right)-1}{2013\times2015+2014}=\frac{2015\times2013+2015-1}{2013\times2015+2014}=\frac{2015\times2013+2014}{2013\times2015+2014}=1\)
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Mẫu số = 2014.2012.100010001 - 2012.2014.100010001 = 0
Vậy phân số trên vô nghĩa vì mẫu số bằng 0.
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bằng 1 thưa bạn
=(2014*2013 +2014+2014-2016) : (2012 +2013*2014)
=(2014*2013 +2012):(2012+2013*2014)
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$\frac{\frac{2010}{2011}}{\frac{2012}{2013}}+\frac{\frac{2011}{2012}}{\frac{2013}{2014}}+\frac{\frac{2012}{2013}}{\frac{2014}{2015}}$
$\frac{\frac{2010}{2011}}{\frac{2012}{2013}}+\frac{\frac{2011}{2012}}{\frac{2013}{2014}}+\frac{\frac{2012}{2013}}{\frac{2014}{2015}}$
$\frac{\frac{2010+2011+2012}{2011+2012+2013}}{\frac{2012+2013+2014}{2013+2014+2015}}$
$\frac{\frac{2010}{2011}+\frac{2011}{2012}+\frac{2012}{2013}}{\frac{2012+2013+2014}{2013+2014+2015}}$
$\frac{\frac{2010+2011+2012}{2011+2012+2013}}{\frac{2012}{2013}+\frac{2013}{2014}+\frac{2014}{2015}}$
Tử số = \(2012+\left(2015-2\right)x2014=2012+2014x2015-4028=2014x2015-\left(4028-2012\right)=2014x2015-2016\)
Tử số = mấu số nên kết quả =1