Вариант 1. Решите уравнение: a) 8/25 * x = 3 1/5

a) \(\frac{8}{25} x = 3 \frac{1}{5}\)
\(\frac{8}{25} x = \frac{16}{5}\)
\(x = \frac{16}{5} : \frac{8}{25}\)
\(x = \frac{16}{5} \cdot \frac{25}{8}\)
\(x = \frac{16 \cdot 25}{5 \cdot 8}\)
\(x = \frac{400}{40}\)
\(x = 10\)