$\frac{5}{6}和\frac{3}{18}$
$\frac{5}{6}=\frac{15}{18}$
$\frac{5}{6}>\frac{13}{18}$
$\frac{10}{11}和\frac{11}{12}$
$ \begin{aligned} \frac{10}{11}&=\frac{120}{132} \\ \frac{11}{12}&=\frac{121}{132} \\ \end{aligned}$
$\frac{120}{132}\lt \frac{121}{132}$
$\frac{10}{11}<\frac{11}{12}$
$\frac{3}{8}和\frac{7}{12}$
$ \begin{aligned} \frac{3}{8}&=\frac{9}{24} \\ \frac{7}{12}&=\frac{14}{24} \\ \end{aligned}$
$\frac{9}{24}\lt \frac{14}{24}$
$\frac{3}{8}<\frac{7}{12}$
$\frac{3}{14}和\frac{2}{21}$
$ \begin{aligned} \frac{3}{14}&=\frac{9}{42} \\ \frac{2}{21}&=\frac{4}{42} \\ \end{aligned}$
$\frac{9}{42}\gt \frac{4}{42}$
$\frac{3}{14}\gt \frac{2}{21}$