\[\frac{1}{2} + \frac{1}{6} - \frac{2}{3} > \frac{3}{4} \cdot \left( - 1\frac{1}{3} \right)\]
\[\frac{3}{6} + \frac{1}{6} - \frac{4}{6} > \frac{3}{4} \cdot \left( - \frac{4}{3} \right)\]
\[0 > - 1 \Longrightarrow верно.\]