\[|7x - 5| \leq 3\]
\[- 3 \leq 7x - 5 \leq 3\]
\[2 \leq 7x \leq 8\]
\[\frac{2}{7} \leq x \leq 1\frac{1}{7}\]
\[Ответ:\left\lbrack \frac{2}{7};1\frac{1}{7} \right\rbrack.\]