5) 2/5 * (-3/5) =

The problem asks to multiply two fractions, one of which is negative: \(\frac{2}{5} \times \left(-\frac{3}{5}\right)\).

1. Multiply the numerators: \(2 \times (-3) = -6\)
2. Multiply the denominators: \(5 \times 5 = 25\)
3. Combine the results: The resulting fraction is \(\frac{-6}{25}\).

Ответ: \(-\frac{6}{25}\)