Вычислите 1 Целая 1/5+3 целых 4/5/(2 целых 5/18-5 целых 1/12+4 целых 2/9)

$1 \frac{1}{5} +3 \frac{4}{5} : (2 \frac{5}{18} -5 \frac{1}{12} +4 \frac{2}{9} ) = ?$

$2 \frac{5}{18} -5 \frac{1}{12} +4 \frac{2}{9} = \frac{41}{18} - \frac{61}{12} + \frac{38}{9} = \frac{82}{36} - \frac{183}{36} + \frac{152}{36} = \frac{51}{36} = \frac{17}{12}$

$1 \frac{1}{5} +3 \frac{4}{5} = \frac{6}{5} + \frac{19}{5} = \frac{25}{5} =5$

$\frac{5}{1} : \frac{17}{12} = \frac{5}{1} * \frac{12}{17} = \frac{60}{17} =3 \frac{9}{17}$

Ответ: $3 \frac{9}{17}$