\[\boxed{\mathbf{1029.\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\left\{ \begin{matrix} - 4x \leq - 12 \\ x + 2 > 6 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x \geq 3 \\ x > 4 \\ \end{matrix} \right.\ \]
\[Ответ:(4;\ + \infty).\]
\[2)\ \left\{ \begin{matrix} 8 - x \geq 5 \\ x - 7 \leq 2 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} - x \geq - 3 \\ x \leq 9\ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ }\]
\[\left\{ \begin{matrix} x \leq 3 \\ x \leq 9 \\ \end{matrix} \right.\ \]
\[Ответ:( - \infty;3\rbrack.\]
\[3)\ \left\{ \begin{matrix} 3x - 3 < 5x\ \ \ \\ 7x - 10 < 5x \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\left\{ \begin{matrix} - 2x < 3 \\ 2x < 10 \\ \end{matrix} \right.\ \text{\ \ \ }\]
\[\text{\ \ }\left\{ \begin{matrix} x > - 1,5 \\ x < 5\ \ \ \ \ \ \\ \end{matrix} \right.\ \]
\[Ответ:( - 1,5;5).\]
\[4)\ \left\{ \begin{matrix} 2 - 3x < 4x - 12 \\ 7 + 3x \geq 2x + 10 \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\ \left\{ \begin{matrix} - 7x < - 14 \\ x \geq 3\ \ \ \ \ \ \ \ \ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\]
\[\left\{ \begin{matrix} x > 2 \\ x \geq 3 \\ \end{matrix} \right.\ \]
\[Ответ:\lbrack 3;\ + \infty).\]