Ta có:
\(\frac{5}{2};\frac{7}{4}>1\) ; \(\frac{4}{5};\frac{7}{10}< 1\)
Mà \(\frac{5}{2}=\frac{10}{4}>\frac{7}{4}\); \(\frac{4}{5}=\frac{8}{10}>\frac{7}{10}\)
\(\Rightarrow\frac{5}{2}>\frac{7}{4}>\frac{4}{5}>\frac{7}{10}\)
Vậy ta sắp xếp \(\frac{5}{2};\frac{7}{4};\frac{4}{5};\frac{7}{10}\)