Решите уравнение: 15-5(x-3)=22-7x.

\[15 - 5(x - 3) = 22 - 7x\]

\[15 - 5x + 15 = 22 - 7x\]

\[- 5x + 7x = 22 - 30\]

\[2x = - 8\]

\[x = - 4.\]