Помогите решить пример под цифрой 2

Решите задачу:

$m+(-2\frac{4}{9})+8\frac{13}{24}+n+(-3\frac{2}{9})+(-4\frac{5}{24})=$ $m-2\frac{4}{9}+\frac{205}{24}+n+-3\frac{2}{9}-4\frac{5}{24}=m-\frac{22}{9}+\frac{205}{24}+n+-\frac{29}{9}-\frac{101}{24}=$ $m+ \frac{-176+615-232-303}{72}+n=m-\frac{96}{72}+n=m-\frac{4}{3}+n$
$-3\frac{5}{6}-\frac{4}{3}-2\frac{11}{12}=-\frac{23}{6}-\frac{4}{3}-\frac{35}{12}=- \frac{46+16+35}{12}=-\frac{97}{12}=-8\frac{1}{12}$