Ответ:

\(\frac{5}{6}-0.5=\frac{5}{6}-\frac{1}{2}=\frac{1}{3}\).

\(2.4\cdot\frac{1}{3}+\frac{1}{3}:0.25=0.8+\frac{1}{3}:\frac{1}{4}=0.8+\frac{4}{3}.\)

\(0.8+\frac{4}{3}=\frac{4}{5}+\frac{4}{3}=\frac{32}{15}=2\frac{2}{15}.\)

Ответ: \(2\frac{2}{15}\).