\[ \begin{eqnarray*} \frac{x}{2} - 4 & = & 3 \\ {x} - 8 & = & 3 \\ {x} & = & 14 \\ \end{eqnarray*} \]
\begin{array}{rcccl} 2 &< &3x + 5 &\leq& 17\\ -3 &<& 3x &\leq& 12\\ -1 &<& x &\leq& 4\\ \end{array}