Помогите Алгебра пж Комек керек пж

Решите задачу:

$2\frac{3}{4}\div(1\frac{1}{2}-\frac{2}{5})+(\frac{3}{4}+\frac{5}{6})\div3\frac{1}{6}\\\frac{11}{4}\div(\frac{3}{2}-\frac{2}{5})+(\frac{9+10}{12})\div\frac{19}{6}\\\frac{11}{4}\div\frac{15-4}{10}+\frac{19}{12}\times\frac{6}{19}\\\frac{11}{4}\div\frac{11}{10}+\frac{19}{12}\times\frac{6}{19}\\\frac{11}{4}\times\frac{10}{11}+\frac{19}{12}\times\frac{6}{19}\\\frac{11\times10}{4\times11}+\frac{19\times6}{12\times19}\\\frac{5}{2}+\frac{1}{2}\\\frac{5+1}{2}\\\frac{6}{2}\\3$