Вычисли значения выражений: a) 6 1/3 - 8

a) $6\frac{1}{3} - 8 = \frac{19}{3} - 8 = \frac{19}{3} - \frac{24}{3} = -\frac{5}{3} = -1\frac{2}{3}$ б) $-2\frac{2}{7} + 4\frac{3}{5} = -\frac{16}{7} + \frac{23}{5} = -\frac{80}{35} + \frac{161}{35} = \frac{81}{35} = 2\frac{11}{35}$ в) $5\frac{1}{3} - 6\frac{1}{4} = \frac{16}{3} - \frac{25}{4} = \frac{64}{12} - \frac{75}{12} = -\frac{11}{12}$ г) $3\frac{8}{9} : (-\frac{16}{9}) = \frac{35}{9} : (-\frac{16}{9}) = \frac{35}{9} \cdot (-\frac{9}{16}) = -\frac{35}{16} = -2\frac{3}{16}$ д) $\frac{5}{12} \cdot (-6) = \frac{5}{12} \cdot (-\frac{6}{1}) = -\frac{30}{12} = -\frac{5}{2} = -2.5$ e) $-3\frac{2}{9} \cdot 3 = -\frac{29}{9} \cdot \frac{3}{1} = -\frac{29}{3} = -9\frac{2}{3}$ ж) $\frac{7}{4} \cdot (-49) = - \frac{7 \cdot 49}{4} = - \frac{343}{4} = -85\frac{3}{4}$ з) $-16 : (-\frac{4}{9}) = -16 \cdot (-\frac{9}{4}) = \frac{16 \cdot 9}{4} = \frac{4 \cdot 9}{1} = 36$ и) $-3\frac{1}{2} \cdot (-1\frac{3}{7}) = -\frac{7}{2} \cdot (-\frac{10}{7}) = \frac{7 \cdot 10}{2 \cdot 7} = \frac{10}{2} = 5$ *Перевод: Вычислите:* *a) $6\frac{1}{3} - 8 = -1\frac{2}{3}$* *б) $-2\frac{2}{7} + 4\frac{3}{5} = 2\frac{11}{35}$* *в) $5\frac{1}{3} - 6\frac{1}{4} = -\frac{11}{12}$* *г) $3\frac{8}{9} : (-\frac{16}{9}) = -2\frac{3}{16}$* *д) $\frac{5}{12} \cdot (-6) = -2.5$* *е) $-3\frac{2}{9} \cdot 3 = -9\frac{2}{3}$* *ж) $\frac{7}{4} \cdot (-49) = -85\frac{3}{4}$* *з) $-16 : (-\frac{4}{9}) = 36$* *и) $-3\frac{1}{2} \cdot (-1\frac{3}{7}) = 5$