Ta có: \(5^{12}< 5^{13}\)
\(\Rightarrow5^{12}-1< 5^{13}+1\)
\(\Rightarrow m=\frac{5^{12}-1}{5^{13}+1}< 1\)
\(\Rightarrow m>\frac{5^{12}-1-4}{5^{13}+1+4}\)
\(\Rightarrow m>\frac{5^{12}-5}{5^{13}+5}\)
\(\Rightarrow m>\frac{5\left(5^{11}-1\right)}{5\left(5^{12}+1\right)}\)
\(\Rightarrow m>\frac{5^{11}-1}{5^{12}+1}\)
\(\Rightarrow m>n\)