Question

Номер 3, 2 пример.
Помогите мне

Answer 1

$2\frac{3}{4}-(-1\frac{1}{2})+(-\frac{5}{6})-(-\frac{3}{8})-4\frac{2}{3}=\\\\=\frac{11}{4}+\frac{3}{2}-\frac{5}{6}+\frac{3}{8}-\frac{14}{3}=\frac{66+36-20+9-112}{24}=-\frac{21}{24}=-\frac{7}{8}$