Выполните действие:
а) $\frac{3}{4} * \frac{5}{7}$;
б) $\frac{1}{8} * \frac{3}{4}$;
в) $\frac{4}{7} * \frac{5}{6}$;
г) $\frac{2}{5} * \frac{7}{11}$;
д) $\frac{1}{2} * \frac{4}{9}$;
е) $\frac{11}{12} * \frac{8}{9}$;
ж) $\frac{2}{5} * \frac{3}{2}$;
з) $\frac{11}{15} * \frac{3}{5}$;
и) $\frac{15}{16} * \frac{5}{9}$;
к) $\frac{12}{25} * \frac{9}{16}$;
л) $\frac{14}{17} * \frac{34}{63}$;
м) $\frac{17}{26} * \frac{13}{18}$;
н) $(\frac{4}{5})^2$;
о) $(\frac{2}{3})^3$;
п) $(\frac{1}{7})^2$.
$\frac{3}{4} * \frac{5}{7} = \frac{15}{28}$
$\frac{1}{8} * \frac{3}{4} = \frac{3}{32}$
$\frac{4}{7} * \frac{5}{6} = \frac{4 * 5}{7 * 6} = \frac{2 * 5}{7 * 3} = \frac{10}{21}$
$\frac{2}{5} * \frac{7}{11} = \frac{14}{55}$
$\frac{1}{2} * \frac{4}{9} = \frac{1 * 4}{2 * 9} = \frac{1 * 2}{1 * 9} = \frac{2}{9}$
$\frac{11}{12} * \frac{8}{9} = \frac{11 * 8}{12 * 9} = \frac{11 * 2}{3 * 9} = \frac{22}{27}$
$\frac{2}{5} * \frac{3}{2} = \frac{2 * 3}{5 * 2} = \frac{1 * 3}{5 * 1} = \frac{3}{5}$
$\frac{11}{15} * \frac{3}{5} = \frac{11 * 3}{15 * 5} = \frac{11 * 1}{5 * 5} = \frac{11}{25}$
$\frac{15}{16} * \frac{5}{9} = \frac{15 * 5}{16 * 9} = \frac{5 * 5}{16 * 3} = \frac{25}{48}$
$\frac{12}{25} * \frac{9}{16} = \frac{12 * 9}{25 * 16} = \frac{3 * 9}{25 * 4} = \frac{27}{100}$
$\frac{14}{17} * \frac{34}{63} = \frac{14 * 34}{17 * 63} = \frac{2 * 2}{1 * 9} = \frac{4}{9}$
$\frac{17}{26} * \frac{13}{18} = \frac{17 * 13}{26 * 18} = \frac{17 * 1}{2 * 18} = \frac{17}{36}$
$(\frac{4}{5})^2 = \frac{4}{5} * \frac{4}{5} = \frac{16}{25}$
$(\frac{2}{3})^3 = \frac{2}{3} * \frac{2}{3} * \frac{2}{3} = \frac{8}{27}$
$(\frac{1}{7})^2 = \frac{1}{7} * \frac{1}{7} = \frac{2}{49}$
Пожауйста, оцените решение