1. \(\frac{3}{5}\cdot\left(2\frac{1}{2}-\frac{1}{3}-\frac{1}{5}\right)=\)

\(2\frac{1}{2}=\frac{5}{2}\).

\(\frac{5}{2}-\frac{1}{3}-\frac{1}{5}=\frac{75-10-6}{30}=\frac{59}{30}\).

\(\frac{3}{5}\cdot\frac{59}{30}=\frac{177}{150}=\frac{59}{50}=1\frac{9}{50}\).

Ответ: \(1\frac{9}{50}\).