Answer
$ (\frac{17}{6}, \frac{19}{6})$
See graph.
Work Step by Step
Step 1. $|(3x-2)-7|\lt \frac{1}{2}$ or $|3x-9|\lt \frac{1}{2}$ can be separated into $-\frac{1}{2}\lt 3x-9\lt \frac{1}{2}$ which lead to $\frac{17}{6}\lt x\lt \frac{19}{6}$, thus we have the solution $ (\frac{17}{6}, \frac{19}{6})$
Step 2. See graph.