\[9x² \leq 5x\]
\[9x^{2} - 5x \leq 0\]
\[x(9x - 5) = 0\]
\[x = 0,\ \ x = \frac{5}{9}\]
\[Ответ:\ \left\lbrack 0;\frac{5}{9} \right\rbrack.\]