6) (6 7/12 − 3 17/36) · 1/2 + 4 1/3 : 13/20

Разность в скобках:

\(6\frac{7}{12}-3\frac{17}{36}=\frac{237}{36}-\frac{125}{36}=\frac{112}{36}=\frac{28}{9}\).

\(\frac{28}{9}\cdot\frac{1}{2}=\frac{14}{9}\).

\(4\frac{1}{3}:\frac{13}{20}=\frac{13}{3}\cdot\frac{20}{13}=\frac{20}{3}\).

\(\frac{14}{9}+\frac{20}{3}=\frac{14}{9}+\frac{60}{9}=\frac{74}{9}=8\frac{2}{9}\).

Ответ: \(8\frac{2}{9}\).