10) \(7 - 1\frac{2}{3}\)

\[7 - 1\frac{2}{3} = 7 - \frac{5}{3} = \frac{21}{3} - \frac{5}{3} = \frac{16}{3} = 5\frac{1}{3}.\]

Ответ: \(5\frac{1}{3}\)