Решите уравнение: 3*(x+6)=x+2*(x+9).

\[3 \cdot (x + 6) = x + 2 \cdot (x + 9)\]

\[3x + 18 = x + 2x + 18\]

\[3x - 3x = 18 - 18\]

\[0x = 0\]

\[x - любое\ число.\]