Решите неравенство: 2/3*(1/3 x-1/2)>=4x+2 1/2.

\[\frac{2}{3} \cdot \left( \frac{1}{3}x - \frac{1}{2} \right) \geq 4x + 2\frac{1}{2}\]

\[\frac{2}{9}x - \frac{1}{3} \geq 4x + \frac{5}{2}\]

\[- \frac{34}{9}x \geq \frac{17}{6}\ \]

\[x \leq \frac{3}{4} \leq 0,75\]

\[Ответ:( - \infty;\ \left. \ 0,75 \right\rbrack.\]