Найдите несократимые дроби, равные данным:
а) $\frac{24}{60}, \frac{15}{20}, \frac{21}{30}$;
б) $\frac{65}{100}, \frac{94}{100}, \frac{8}{1000}$;
в) $\frac{16}{100}, \frac{72}{450}, \frac{144}{3600}$;
г) $\frac{18}{900}, \frac{120}{50}, \frac{404}{5050}$.
$\frac{24}{60} = \frac{24 : 12}{60 : 12} = \frac{2}{5}$;
$\frac{15}{20} = \frac{15 : 5}{20 : 5} = \frac{3}{4}$;
$\frac{21}{30} = \frac{21 : 3}{30 : 3} = \frac{7}{10}$.
$\frac{65}{100} = \frac{65 : 5}{100 : 5} = \frac{13}{20}$;
$\frac{94}{100} = \frac{94 : 2}{100 : 2} = \frac{47}{50}$;
$\frac{8}{1000} = \frac{8 : 8}{1000 : 8} = \frac{1}{125}$.
$\frac{16}{100} = \frac{16 : 4}{100 : 4} = \frac{4}{25}$;
$\frac{72}{450} = \frac{72 : 18}{450 : 18} = \frac{4}{25}$;
$\frac{144}{3600} = \frac{144 : 144}{3600 : 144} = \frac{1}{25}$.
$\frac{18}{900} = \frac{18 : 18}{900 : 18} = \frac{1}{50}$;
$\frac{120}{50} = \frac{120 : 10}{50 : 10} = \frac{12}{5}$;
$\frac{404}{5050} = \frac{404 : 202}{5050 : 202} = \frac{2}{25}$.
Пожауйста, оцените решение