2 11/15 · 1 1/19 − 1 1/19 · 0,2

Преобразуем смешанные числа: \(2\frac{11}{15}=\frac{41}{15}\), \(1\frac{1}{19}=\frac{20}{19}\), \(0,2=\frac{1}{5}\).

\(\frac{41}{15}\cdot\frac{20}{19}-\frac{20}{19}\cdot\frac{1}{5}=\frac{20}{19}\left(\frac{41}{15}-\frac{1}{5}\right)=\frac{20}{19}\cdot\frac{38}{15}=\frac{152}{57}\).

Ответ: \(\frac{152}{57}=2\frac{38}{57}\).