Вычисли значения выражений: 6 - 8 1/3, -2 2/7 + 4 3/5, 5 1/3 - 6 1/4, 3/8 : (-9/16), 12 5/12 * (-6), -3 2/9 * 3, -4/7 * (-49), -16 : (-4/9), -3 1/2

*a) $6 \frac{1}{3} - 8 = \frac{19}{3} - 8 = \frac{19}{3} - \frac{24}{3} = -\frac{5}{3} = -1 \frac{2}{3}$* *б) $-2 \frac{2}{7} + 4 \frac{3}{5} = -\frac{16}{7} + \frac{23}{5} = \frac{-16 \cdot 5 + 23 \cdot 7}{35} = \frac{-80 + 161}{35} = \frac{81}{35} = 2 \frac{11}{35}$* *в) $5 \frac{1}{3} - 6 \frac{1}{4} = \frac{16}{3} - \frac{25}{4} = \frac{16 \cdot 4 - 25 \cdot 3}{12} = \frac{64 - 75}{12} = -\frac{11}{12}$* *г) $\frac{3}{8} : (-\frac{9}{16}) = \frac{3}{8} \cdot (-\frac{16}{9}) = -\frac{3 \cdot 16}{8 \cdot 9} = -\frac{48}{72} = -\frac{2}{3}$* *д) $12 \frac{5}{12} \cdot (-6) = \frac{149}{12} \cdot (-6) = -\frac{149 \cdot 6}{12} = -\frac{149}{2} = -74 \frac{1}{2}$* *е) $-3 \frac{2}{9} \cdot 3 = -\frac{29}{9} \cdot 3 = -\frac{29 \cdot 3}{9} = -\frac{29}{3} = -9 \frac{2}{3}$* *ж) $-\frac{4}{7} \cdot (-49) = \frac{4 \cdot 49}{7} = 4 \cdot 7 = 28$* *з) $-16 : (-\frac{4}{9}) = -16 \cdot (-\frac{9}{4}) = \frac{16 \cdot 9}{4} = 4 \cdot 9 = 36$* *и) $-3 \frac{1}{2} = -\frac{7}{2} = -3.5$* **Ответ:** *a) $-1 \frac{2}{3}$* *б) $2 \frac{11}{35}$* *в) $-\frac{11}{12}$* *г) $-\frac{2}{3}$* *д) $-74 \frac{1}{2}$* *е) $-9 \frac{2}{3}$* *ж) $28$* *з) $36$* *и) $-3.5$*