Вычислите:
а) $6\frac{1}{3} - 8$;
б) $-2\frac{2}{7} + 4\frac{3}{5}$;
в) $5\frac{1}{3} - 6\frac{1}{4}$;
г) $\frac{3}{8} : (-\frac{9}{16})$;
д) $\frac{5}{12} * (-6)$;
е) $-3\frac{2}{9} * 3$;
ж) $\frac{4}{7} * (-49)$;
з) $-16 : (-\frac{4}{9})$;
и) $-3\frac{1}{2} * (-1\frac{3}{7})$.
$6\frac{1}{3} - 8 = 6\frac{1}{3} - 7\frac{3}{3} = -1\frac{2}{3}$
$-2\frac{2}{7} + 4\frac{3}{5} = -2\frac{10}{35} + 4\frac{21}{35} = 2\frac{11}{35}$
$5\frac{1}{3} - 6\frac{1}{4} = 5\frac{4}{12} - 6\frac{3}{12} = 5\frac{4}{12} - 5\frac{15}{12} = -\frac{11}{12}$
$\frac{3}{8} : (-\frac{9}{16}) = \frac{3}{8} * (-\frac{16}{9}) = \frac{1}{1} * (-\frac{2}{3}) = -\frac{2}{3}$
$\frac{5}{12} * (-6) = \frac{5}{2} * (-1) = -2\frac{1}{2}$
$-3\frac{2}{9} * 3 = -\frac{29}{9} * 3 = -\frac{29}{3} = -9\frac{2}{3}$
$\frac{4}{7} * (-49) = \frac{4}{1} * (-7) = -28$
$-16 : (-\frac{4}{9}) = -16 * (-\frac{9}{4}) = -4 * (-\frac{9}{1}) = 36$
$-3\frac{1}{2} * (-1\frac{3}{7}) = -\frac{7}{2} * (-\frac{10}{7}) = -\frac{1}{1} * (-\frac{5}{1}) = 5$
Пожауйста, оцените решение