\[\ 5 \cdot (x + 1,8) - 4,6 > 3x - 1,6\]
\[5x - 9 - 4,6 > 3x - 1,6\]
\[2x > 12\]
\[x > 6.\]
\[\frac{4 - 3b}{2} < 12 + b\ \ \ | \cdot 2\]
\[4 - 3b < 24 + 2b\]
\[- 5b < 20\]
\[b > - 4.\]
\[\ \left\{ \begin{matrix} 2x + 9 > 0 \\ 9x - 1 < 0 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ }\left\{ \begin{matrix} 2x > - 9 \\ 9x < 1\ \ \ \\ \end{matrix} \right.\ \text{\ \ \ \ \ }\left\{ \begin{matrix} x > - 4,5 \\ x < \frac{1}{9}\text{\ \ \ \ \ \ } \\ \end{matrix} \right.\ \]
\[Ответ:\ \ x \in \left( - 4,5;\frac{1}{9} \right).\]