Вычисли значения выражений: 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) $-2\frac{3}{7} + 4\frac{3}{5} = -\frac{17}{7} + \frac{23}{5} = \frac{-17*5 + 23*7}{35} = \frac{-85 + 161}{35} = \frac{76}{35} = 2\frac{6}{35}$ в) $5\frac{1}{3} - 6\frac{1}{4} = \frac{16}{3} - \frac{25}{4} = \frac{16*4 - 25*3}{12} = \frac{64 - 75}{12} = -\frac{11}{12}$ г) $8\frac{3}{16} : (-\frac{9}{16}) = \frac{131}{16} : (-\frac{9}{16}) = \frac{131}{16} * (-\frac{16}{9}) = -\frac{131}{9} = -14\frac{5}{9}$ д) $\frac{5}{12} * (-6) = \frac{5 * (-6)}{12} = \frac{-30}{12} = -\frac{5}{2} = -2.5$ ж) $\frac{4}{7} * (-49) = \frac{4 * (-49)}{7} = 4 * (-7) = -28$ з) $-16 : (-\frac{4}{9}) = -16 * (-\frac{9}{4}) = \frac{-16 * (-9)}{4} = \frac{144}{4} = 36$ е) $-3\frac{2}{9} * 3 = -\frac{29}{9} * 3 = -\frac{29 * 3}{9} = -\frac{29}{3} = -9\frac{2}{3}$ и) $-3\frac{1}{2} * (-\frac{1}{3}) = -\frac{7}{2} * (-\frac{1}{3}) = \frac{-7 * (-1)}{2 * 3} = \frac{7}{6} = 1\frac{1}{6}$