Вычислите произведение:
а) $\frac{15}{49} * 14$;
б) $\frac{11}{36} * 27$;
в) $18 * \frac{13}{48}$;
г) $24 * \frac{35}{56}$;
д) $25 * \frac{7}{30}$;
е) $32 * \frac{11}{48}$;
ж) $\frac{13}{15} * 6$;
з) $\frac{7}{20} * 15$.
$\frac{15}{49} * 14 = \frac{15}{7 * 7} * \frac{7 * 2}{1} = \frac{30}{7}$
$\frac{11}{36} * 27 = \frac{11}{4 * 9} * \frac{3 * 9}{1} = \frac{33}{4}$
$18 * \frac{13}{48} = \frac{6 * 3}{1} * \frac{13}{6 * 8} = \frac{39}{8}$
$24 * \frac{35}{56} = \frac{8 * 3}{1} * \frac{7 * 5}{8 * 7} = \frac{15}{1} = 15$
$25 * \frac{7}{30} = \frac{5 * 5}{1} * \frac{7}{6 * 5} = \frac{35}{6}$
$32 * \frac{11}{48} = \frac{16 * 2}{1} * \frac{11}{16 * 3} = \frac{22}{3}$
$\frac{13}{15} * 6 = \frac{13}{15} * \frac{2 * 3}{1} = \frac{26}{5}$
$\frac{7}{20} * 15 = \frac{7}{5 * 4} * \frac{5 * 3}{1} = \frac{21}{4}$
Пожауйста, оцените решение