Приведите дроби:
1) $\frac{1}{2}; \frac{3}{4}; \frac{4}{5}; \frac{9}{10}$ к знаменателю 20;
2) $\frac{3}{4}; \frac{1}{6}; \frac{7}{18}; \frac{8}{9}$ к знаменателю 36;
3) $\frac{1}{2}; \frac{2}{4}; \frac{3}{8}; \frac{5}{32}$ к знаменателю 64;
4) $\frac{1}{5}; \frac{1}{4}; \frac{7}{25}; \frac{63}{50}$ к знаменателю 100.
$\frac{1}{2} = \frac{1 * 10}{2 * 10} = \frac{10}{20}$;
$\frac{3}{4} = \frac{3 * 5}{4 * 5} = \frac{15}{20}$;
$\frac{4}{5} = \frac{4 * 4}{5 * 4} = \frac{16}{20}$;
$\frac{9}{10} = \frac{9 * 2}{10 * 2} = \frac{18}{20}$.
$\frac{3}{4} = \frac{3 * 9}{4 * 9} = \frac{27}{36}$;
$\frac{1}{6} = \frac{1 * 6}{6 * 6} = \frac{6}{36}$;
$\frac{7}{18} = \frac{7 * 2}{18 * 2} = \frac{14}{36}$;
$\frac{8}{9} = \frac{8 * 4}{9 * 4} = \frac{32}{36}$.
$\frac{1}{2} = \frac{1 * 32}{2 * 32} = \frac{32}{64}$;
$\frac{2}{4} = \frac{2 * 16}{4 * 16} = \frac{32}{64}$;
$\frac{3}{8} = \frac{3 * 8}{8} = \frac{24}{64}$;
$\frac{5}{32} = \frac{5 * 2}{32} = \frac{10}{64}$.
$\frac{1}{5} = \frac{1 * 20}{5 * 20} = \frac{20}{100}$;
$\frac{1}{4} = \frac{1 * 25}{4 * 25} = \frac{25}{100}$;
$\frac{7}{25} = \frac{7 * 4}{25 * 4} = \frac{28}{100}$;
$\frac{63}{50} = \frac{63 * 2}{50 * 2} = \frac{126}{100}$.
Пожауйста, оцените решение