Выполните действие:
а) $\frac{1}{3} + \frac{1}{5}$;
б) $\frac{1}{3} - \frac{1}{4}$;
в) $2\frac{1}{9} + 1\frac{1}{3}$;
г) $2\frac{1}{2} - 1\frac{1}{3}$;
д) $3 - 1\frac{2}{5}$;
е) $\frac{2}{3} * \frac{3}{4}$;
ж) $\frac{4}{5} * 5$;
з) $\frac{5}{9} * \frac{1}{5}$;
и) $1\frac{1}{3} * \frac{3}{4}$;
к) $2\frac{1}{4} * 1\frac{1}{3}$.
$\frac{1}{3} + \frac{1}{5} = \frac{5}{15} + \frac{3}{15} = \frac{8}{15}$
$\frac{1}{3} - \frac{1}{4} = \frac{4}{12} - \frac{3}{12} = \frac{1}{12}$
$2\frac{1}{9} + 1\frac{1}{3} = 2\frac{1}{9} + 1\frac{3}{9} = 3\frac{4}{9}$
$2\frac{1}{2} - 1\frac{1}{3} = 2\frac{3}{6} - 1\frac{2}{6} = 1\frac{1}{6}$
$3 - 1\frac{2}{5} = 2\frac{5}{5} - 1\frac{2}{5} = 1\frac{3}{5}$
$\frac{2}{3} * \frac{3}{4} = \frac{1}{1} * \frac{1}{2} = \frac{1}{2}$
$\frac{4}{5} * 5 = \frac{4}{1} * 1 = 4$
$\frac{5}{9} * \frac{1}{5} = \frac{1}{9} * \frac{1}{1} = \frac{1}{9}$
$1\frac{1}{3} * \frac{3}{4} = \frac{4}{3} * \frac{3}{4} = 2$
$2\frac{1}{4} * 1\frac{1}{3} = \frac{9}{4} * \frac{4}{3} = \frac{9}{3} = 3$
Пожауйста, оцените решение