Найдите значение произведения:
а) $-\frac{2}{3} * \frac{3}{8}$;
б) $\frac{4}{15} * (-\frac{5}{8})$;
в) $-\frac{5}{9} * (-\frac{12}{25})$;
г) $-3\frac{1}{2} * (-\frac{4}{7})$;
д) $1\frac{1}{8} * (-5\frac{1}{3})$;
е) $-3\frac{3}{5} * 6\frac{1}{4}$;
ж) $-3\frac{1}{5} * 1,2$;
з) $1,8 * (-1\frac{1}{3})$;
и) $-2\frac{2}{15} * (-6,25)$.
$-\frac{2}{3} * \frac{3}{8} = -\frac{1}{1} * \frac{1}{4} = -\frac{1}{4}$
$\frac{4}{15} * (-\frac{5}{8}) = \frac{1}{3} * (-\frac{1}{2}) = -\frac{1}{6}$
$-\frac{5}{9} * (-\frac{12}{25}) = -\frac{1}{3} * (-\frac{4}{5}) = \frac{4}{15}$
$-3\frac{1}{2} * (-\frac{4}{7}) = -\frac{7}{2} * (-\frac{4}{7}) = -\frac{1}{1} * (-\frac{2}{1}) = 2$
$1\frac{1}{8} * (-5\frac{1}{3}) = \frac{9}{8} * (-\frac{16}{3}) = \frac{3}{1} * (-\frac{2}{1}) = -6$
$-3\frac{3}{5} * 6\frac{1}{4} = -\frac{18}{5} * \frac{25}{4} = -\frac{9}{1} * \frac{5}{2} = -\frac{45}{2} = -22\frac{1}{2}$
$-3\frac{1}{5} * 1,2 = -\frac{16}{5} * \frac{6}{5} = -\frac{96}{25} = -3\frac{21}{25}$
$1,8 * (-1\frac{1}{3}) = \frac{9}{5} * (-\frac{4}{3}) = \frac{3}{5} * (-\frac{4}{1}) = -\frac{12}{5} = -2\frac{2}{5}$
$-2\frac{2}{15} * (-6,25) = -\frac{32}{15} * -\frac{25}{4} = -\frac{8}{3} * -\frac{5}{1} = -\frac{40}{3} = -13\frac{1}{3}$
Пожауйста, оцените решение