\[- 33x^{2} + 55x < 0\]
\[- 11x(3x - 5) < 0\]
\[x = 0,\ \ x = \frac{5}{3}\]
\[Ответ:\ ( - \infty;\ 0) \cup \left( 1\frac{2}{3};\ + \infty \right).\]