Вычислите:
а) $(\frac{1}{6} + \frac{2}{3}) * 3$;
б) $(\frac{17}{30} - \frac{2}{15}) : 13$;
в) $(\frac{1}{8} + \frac{3}{4}) : 5$;
г) $(\frac{4}{3} + \frac{1}{9}) * 4$;
д) $(\frac{1}{2} + \frac{1}{3}) * 2$;
е) $(\frac{1}{2} - \frac{1}{3}) * 3$.
$(\frac{1}{6} + \frac{2}{3}) * 3 = \frac{1 + 4}{6} * 3 = \frac{5}{6} * 3 = \frac{15}{6} = \frac{5}{2} = 2\frac{1}{2}$
$(\frac{17}{30} - \frac{2}{15}) : 13 = \frac{17 - 4}{30} : 13 = \frac{13}{30} : 13 = \frac{1}{30}$
$(\frac{1}{8} + \frac{3}{4}) : 5 = \frac{1 + 6}{8} : 5 = \frac{7}{8} : 5 = \frac{7}{40}$
$(\frac{4}{3} + \frac{1}{9}) * 4 = \frac{12 + 1}{9} * 4 = \frac{13}{9} * 4 = \frac{52}{9} = 5\frac{7}{9}$
$(\frac{1}{2} + \frac{1}{3}) * 2 = \frac{3 + 2}{6} * 2 = \frac{5}{6} * 2 = \frac{10}{6} = \frac{5}{3} = 1\frac{2}{3}$
$(\frac{1}{2} - \frac{1}{3}) * 3 = \frac{3 - 2}{6} * 3 = \frac{1}{6} * 3 = \frac{3}{6} = \frac{1}{2}$
Пожауйста, оцените решение