Вычислите произведение:
а) $\frac{1}{2} * \frac{4}{5} * \frac{5}{6}$;
б) $\frac{7}{8} * \frac{4}{35} * \frac{10}{9}$;
в) $\frac{13}{12} * \frac{24}{65} * \frac{15}{32}$;
г) $\frac{5}{16} * \frac{8}{15} * \frac{4}{3}$;
д) $\frac{42}{56} * \frac{16}{5} * \frac{15}{35}$;
е) $\frac{5}{8} * \frac{8}{9} * \frac{9}{10}$.
$\frac{1}{2} * \frac{4}{5} * \frac{5}{6} = \frac{1 * 4 * 5}{2 * 5 * 6} = \frac{1 * 2 * 2 * 5}{2 * 5 * 2 * 3} = \frac{1}{3}$
$\frac{7}{8} * \frac{4}{35} * \frac{10}{9} = \frac{7 * 4 * 10}{8 * 35 * 9} = \frac{7 * 4 * 5 * 2}{4 * 2 * 5 * 7 * 9} = \frac{1}{9}$
$\frac{13}{12} * \frac{24}{65} * \frac{15}{32} = \frac{13 * 24 * 15}{12 * 65 * 32} = \frac{13 * 2 * 12 * 5 * 3}{12 * 13 * 5 * 2 * 16} = \frac{3}{16}$
$\frac{5}{16} * \frac{8}{15} * \frac{4}{3} = \frac{5 * 8 * 4}{16 * 15 * 3} = \frac{5 * 4 * 2 * 4}{4 * 4 * 5 * 3 * 3} = \frac{2}{3 * 3} = \frac{2}{9}$
$\frac{42}{56} * \frac{16}{5} * \frac{15}{35} = \frac{42 * 16 * 15}{56 * 6 * 36} = \frac{7 * 6 * 8 * 2 * 3 * 5}{7 * 8 * 6 * 2 * 2 * 3 * 3} = \frac{5}{2 * 3} = \frac{5}{6}$
$\frac{5}{8} * \frac{8}{9} * \frac{9}{10} = \frac{5 * 8 * 9}{8 * 9 * 10} = \frac{5 * 8 * 9}{8 * 9 * 2 * 5} = \frac{1}{2}$
Пожауйста, оцените решение