Реши примеры: 13,8 : 3 5/6 - 3 1/5, (18 1/4 - 17 5/6) * 8,4 + 6,5, 3,6 + 4,8 * (8 3/4 - 7 5/6), 13 2/5 - 11,2 : 9 1/3

Конечно, помогу решить эти примеры! a) $13.8 : 3\frac{5}{6} - 3\frac{1}{5} = 13.8 : \frac{23}{6} - \frac{16}{5} = \frac{138}{10} \cdot \frac{6}{23} - \frac{16}{5} = \frac{6}{5} \cdot 3 - \frac{16}{5} = \frac{18}{5} - \frac{16}{5} = \frac{2}{5} = 0.4$ б) $(18\frac{1}{4} - 17\frac{5}{6}) \cdot 8.4 + 6.5 = (\frac{73}{4} - \frac{107}{6}) \cdot 8.4 + 6.5 = (\frac{219}{12} - \frac{214}{12}) \cdot 8.4 + 6.5 = \frac{5}{12} \cdot 8.4 + 6.5 = \frac{5}{12} \cdot \frac{84}{10} + 6.5 = \frac{1}{1} \cdot \frac{7}{2} + 6.5 = 3.5 + 6.5 = 10$ в) $3.6 + 4.8 \cdot (8\frac{3}{4} - 7\frac{5}{6}) = 3.6 + 4.8 \cdot (\frac{35}{4} - \frac{47}{6}) = 3.6 + 4.8 \cdot (\frac{105}{12} - \frac{94}{12}) = 3.6 + 4.8 \cdot \frac{11}{12} = 3.6 + \frac{48}{10} \cdot \frac{11}{12} = 3.6 + \frac{4}{10} \cdot 11 = 3.6 + \frac{44}{10} = 3.6 + 4.4 = 8$ г) $13\frac{2}{5} - 11.2 : 9\frac{1}{3} = \frac{67}{5} - \frac{112}{10} : \frac{28}{3} = \frac{67}{5} - \frac{56}{5} \cdot \frac{3}{28} = \frac{67}{5} - \frac{2}{5} \cdot 3 = \frac{67}{5} - \frac{6}{5} = \frac{61}{5} = 12.2$ **Ответы:** а) 0.4 б) 10 в) 8 г) 12.2