\(\frac{13}{27}>\frac{7}{15}\) NHÉ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11111111
\(\frac{13}{27}=\frac{13.15}{27.15}=\frac{195}{405}\) \(\frac{7}{15}=\frac{7.15}{15.27}=\frac{105}{405}\)
Vì \(\frac{195}{405}>\frac{105}{405}\)nên \(\frac{13}{27}>\frac{7}{15}\)