Решите уравнение: \(-\frac{4}{7}y = \frac{8}{21}.\)
\(-\frac{2}{3}\)
\(\frac{2}{3}\)
\(\frac{2}{7}\)
\(-1\frac{1}{2}\)
\(\frac{3}{7}\)
\(1\frac{1}{2}\)