Ta có : \(\frac{12}{16}=1-\frac{4}{16}=1-\frac{1}{4}\)
\(\frac{20}{24}=1-\frac{4}{24}=1-\frac{1}{6}\)
\(\frac{16}{20}=1-\frac{4}{20}=1-\frac{1}{5}\)
mà \(\frac{1}{4}>\frac{1}{5}>\frac{1}{6}\)
\(\Rightarrow1-\frac{1}{4}< 1-\frac{1}{5}< 1-\frac{1}{6}\)
\(\Rightarrow\frac{12}{16}< \frac{16}{20}< \frac{20}{24}\)