Решите уравнение: (5x+8)-(8x+14)=9.

\[(5x + 8) - (8x + 14) = 9\]

\[5x + 8 - 8x - 14 = 9\]

\[- 3x = 9 + 6\]

\[- 3x = 15\]

\[x = - 5\]

\[Ответ:\ x = - 5.\]