Ответ:
\(3\frac{1}{5}=\frac{16}{5}\).
\(\frac{3}{8}\cdot\frac{16}{5}=\frac{6}{5}\).
\(1-\frac{6}{5}=-\frac{1}{5}\).
Ответ: \(-\frac{1}{5}\).
\(3\frac{1}{5}=\frac{16}{5}\).
\(\frac{3}{8}\cdot\frac{16}{5}=\frac{6}{5}\).
\(1-\frac{6}{5}=-\frac{1}{5}\).
Ответ: \(-\frac{1}{5}\).