\[9x \cdot (x + 6) = 6 \cdot \left( 1,5x^{2} - x \right) + 8\]
\[9x^{2} + 54x = 9x^{2} - 6x + 8\]
\[60x = 8\]
\[x = \frac{2}{15}\]
\[Ответ:при\ x = \frac{2}{15}\text{.\ }\]