\[\frac{2}{3} \cdot \left( \frac{1}{3}x - \frac{1}{2} \right) = 4x + 2\frac{1}{2}\]
\[\frac{2}{9}x - \frac{1}{3} = 4\ x + \frac{5}{2}\]
\[\frac{36}{9}x - \frac{2}{9}x = - \frac{2}{6} - \frac{15}{6}\]
\[\frac{34}{9}x = - \frac{17}{6}\]
\[x = - \frac{17 \cdot 9}{6 \cdot 34}\]
\[x = - \frac{3}{4}.\]