Сравните дроби:
а) $\frac{5}{12}$ и $\frac{3}{8}$;
б) $\frac{3}{14}$ и $\frac{6}{21}$;
в) $\frac{11}{20}$ и $\frac{8}{15}$;
г) $\frac{11}{18}$ и $\frac{7}{12}$.
$\frac{5}{12} = \frac{5 * 2}{12 * 2} = \frac{10}{24}$;
$\frac{3}{8} = \frac{3 * 3}{8 * 3} = \frac{9}{24}$;
$\frac{10}{24} > \frac{9}{24}$;
$\frac{5}{12} > \frac{3}{8}$.
$\frac{3}{14} = \frac{3 * 3}{14 * 3} = \frac{9}{42}$;
$\frac{6}{21} = \frac{6 * 2}{21 * 2} = \frac{12}{42}$;
$\frac{9}{42} < \frac{12}{42}$;
$\frac{3}{14} < \frac{6}{21}$.
$\frac{11}{20} = \frac{11 * 3}{20 * 3} = \frac{33}{60}$;
$\frac{8}{15} = \frac{8 * 4}{15 * 4} = \frac{32}{60}$;
$\frac{33}{60} > \frac{32}{60}$;
$\frac{11}{20} > \frac{8}{15}$.
$\frac{11}{18} = \frac{11 * 2}{18 * 2} = \frac{22}{36}$;
$\frac{7}{12} = \frac{7 * 3}{12 * 3} = \frac{21}{36}$;
$\frac{22}{36} > \frac{21}{36}$;
$\frac{11}{18} > \frac{7}{12}$.
Пожауйста, оцените решение