\[ 4x - x - 3 = 6x - 3 \]
\[ 3x - 3 = 6x - 3 \]
\[ 3x - 6x = -3 + 3 \]
\[ -3x = 0 \]
\[ x = \frac{0}{-3} \]
\[ x = 0 \]
Ответ: x = 0