Вариант 2. 6. Выполните действия: −4,1 · (1 5/6 − 3 8/11 + 8/25 : 0,4).

\(1\dfrac56=\dfrac{11}{6}\), \(3\dfrac{8}{11}=\dfrac{41}{11}\), \(0.4=\dfrac25\).

\(\dfrac{8}{25}:\dfrac25=\dfrac{4}{5}\).

\(\dfrac{11}{6}-\dfrac{41}{11}+\dfrac45=-\dfrac{361}{330}\).

\(-4.1\cdot\left(-\dfrac{361}{330}\right)=\dfrac{14801}{3300}=4\dfrac{1601}{3300}\).

Ответ: \(\dfrac{14801}{3300}\).