\[(a - 2) \cdot x = 3a - 6\]
\[x = \frac{3a - 6}{a - 2} = \frac{3 \cdot (a - 2)}{a - 2} = 3\]
\[x = 3\ при\ a \neq 2;\]
\[x - любое\ число,\ при\ a = 2.\]