\[9x - 6 - 16x - 8 = 20 - 4x\]
\[- 7x + 4x = 20 + 14\]
\[- 3x = 34\]
\[x = - \frac{34}{3}\]
\[x = - 11\frac{1}{3}\]
\[Ответ:\ x = - 11\frac{1}{3}.\]