$\frac{7}{8}$ и $\frac{3}{4}$
$\frac{3}{4} = \frac{3 * 2}{4 * 2} = \frac{6}{8}$
$\frac{7}{8} > \frac{6}{8}$, значит:
$\frac{7}{8} > \frac{3}{4}$

$\frac{6}{25}$ и $\frac{1}{4}$
$\frac{6}{25} = \frac{6 * 4}{25 * 4} = \frac{24}{100}$
$\frac{1}{4} = \frac{1 * 25}{4 * 25} = \frac{25}{100}$
$\frac{24}{100} < \frac{25}{100}$, значит:
$\frac{6}{25} < \frac{1}{4}$

$\frac{7}{5}$ и $\frac{3}{2}$
$\frac{7}{5} = \frac{7 * 2}{5 * 2} = \frac{14}{10}$
$\frac{3}{2} = \frac{3 * 5}{2 * 5} = \frac{15}{10}$
$\frac{14}{10} < \frac{15}{10}$, значит:
$\frac{7}{5} < \frac{3}{2}$

$\frac{5}{6}$ и $\frac{5}{8}$
$\frac{5}{6} = \frac{5 * 4}{6 * 4} = \frac{20}{24}$
$\frac{5}{8} = \frac{5 * 3}{8 * 3} = \frac{15}{24}$
$\frac{20}{24} > \frac{15}{24}$, значит:
$\frac{5}{6} > \frac{5}{8}$

$\frac{2}{3}$ и $\frac{13}{15}$
$\frac{2}{3} = \frac{2 * 5}{3 * 5} = \frac{10}{15}$
$\frac{10}{15} < \frac{13}{15}$, значит:
$\frac{2}{3} < \frac{13}{15}$

$\frac{3}{10}$ и $\frac{7}{12}$
$\frac{3}{10} = \frac{3 * 6}{10 * 6} = \frac{18}{60}$
$\frac{7}{12} = \frac{7 * 5}{12 * 5} = \frac{35}{60}$
$\frac{18}{60} < \frac{35}{60}$, значит:
$\frac{3}{10} < \frac{7}{12}$

$\frac{5}{12}$ и $\frac{3}{4}$
$\frac{3}{4} = \frac{3 * 3}{4 * 3} = \frac{9}{12}$
$\frac{5}{12} < \frac{9}{12}$, значит:
$\frac{5}{12} < \frac{3}{4}$

$\frac{2}{5}$ и $\frac{3}{8}$
$\frac{2}{5} = \frac{2 * 8}{5 * 8} = \frac{16}{40}$
$\frac{3}{8} = \frac{3 * 5}{8 * 5} = \frac{15}{40}$
$\frac{16}{40} > \frac{15}{40}$, значит:
$\frac{2}{5} > \frac{3}{8}$

$\frac{7}{15}$ и $\frac{3}{5}$
$\frac{3}{5} = \frac{3 * 3}{5 * 3} = \frac{9}{15}$
$\frac{7}{15} < \frac{9}{15}$, значит:
$\frac{7}{15} < \frac{3}{5}$