Вычислите: 16,2 × 3/4 + (3 1/2 − 1 5/6) ÷ 2/3.

\[16{,}2\cdot\frac{3}{4}+\left(3\frac{1}{2}-1\frac{5}{6}\right)\div\frac{2}{3}\]

\[16{,}2\cdot\frac{3}{4}=12{,}15,\qquad 3\frac{1}{2}-1\frac{5}{6}=\frac{7}{2}-\frac{11}{6}=\frac{21-11}{6}=\frac{5}{3}.\]

\[\frac{5}{3}\div\frac{2}{3}=\frac{5}{3}\cdot\frac{3}{2}=\frac{5}{2}=2{,}5.\]

\[12{,}15+2{,}5=14{,}65.\]

Ответ: 14,65.