Решите двойное неравенство: -1<=6x<=2.

\[- 1 \leq 6x \leq 2\]

\[- \frac{1}{6} \leq x \leq \frac{1}{3}\]

\[Ответ:\ x \in \left\lbrack - \frac{1}{6};\ \frac{1}{3} \right\rbrack.\]