Сравните дроби:
а) $\frac{3}{14}$ и $\frac{6}{21}$;
б) $\frac{4}{15}$ и $\frac{11}{60}$;
в) $\frac{11}{20}$ и $\frac{8}{15}$;
г) $\frac{5}{9}$ и $\frac{6}{7}$.
$\frac{3}{14} = \frac{3 * 3}{14 * 3} = \frac{9}{42}$;
$\frac{6}{21} = \frac{6 * 2}{21 * 2} = \frac{12}{42}$;
$\frac{9}{42} < \frac{12}{42}$;
$\frac{3}{14} < \frac{6}{21}$.
$\frac{4}{15} = \frac{4 * 4}{15 * 4} = \frac{16}{60}$;
$\frac{16}{60} > \frac{11}{60}$;
$\frac{4}{15} > \frac{11}{60}$.
$\frac{11}{20} = \frac{11 * 3}{20 * 3} = \frac{33}{60}$;
$\frac{8}{15} = \frac{8 * 4}{15 * 4} = \frac{32}{60}$;
$\frac{33}{60} > \frac{32}{60}$;
$\frac{11}{20} > \frac{8}{15}$.
$\frac{5}{9} = \frac{5 * 7}{9 * 7} = \frac{35}{63}$;
$\frac{6}{7} = \frac{6 * 9}{7 * 9} = \frac{54}{63}$;
$\frac{35}{63} < \frac{54}{63}$;
$\frac{5}{9} < \frac{6}{7}$.
Пожауйста, оцените решение