\[\boxed{\text{199\ (199).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1) - 2 \leq \frac{6x + 1}{4} < 4\]
\[- 8 \leq 6x + 1 < 16\]
\[- 9 \leq 6x < 15\]
\[- 1,5 \leq x < \frac{15}{6}\]
\[- 1,5 \leq x < 2,5\]
\[Ответ:x \in \lbrack - 1,5;2,5).\]
\[2)\ 1,2 < \frac{7 - 3x}{5} \leq 1,4\]
\[6 < 7 - 3x \leq 7\]
\[- 1 < - 3x \leq 0\]
\[0 \leq 3x < 1\]
\[0 \leq x < \frac{1}{3}\]
\[Ответ:x \in \left\lbrack 0;\frac{1}{3} \right)\text{.\ }\]