Ответ:
\(2\frac{4}{7}=\frac{18}{7}\), \(1,2=\frac{6}{5}\), \(5\frac{5}{6}=\frac{35}{6}\).
\(\frac{18}{7}-\frac{6}{5}=\frac{48}{35}\).
\(\frac{48}{35}\cdot\frac{35}{6}=8\).
Ответ: 8.
\(2\frac{4}{7}=\frac{18}{7}\), \(1,2=\frac{6}{5}\), \(5\frac{5}{6}=\frac{35}{6}\).
\(\frac{18}{7}-\frac{6}{5}=\frac{48}{35}\).
\(\frac{48}{35}\cdot\frac{35}{6}=8\).
Ответ: 8.