438 внение: 7-3(5x-3) = -11x.

Решим уравнение:

$$7 - 3(5x - 3) = -11x$$

$$7 - 15x + 9 = -11x$$

$$16 - 15x = -11x$$

$$16 = -11x + 15x$$

$$16 = 4x$$

$$x = \frac{16}{4}$$

$$x = 4$$

Ответ: 4