3. Решите уравнение: 1) (327x - 5295) : 57 = 389; 2) (27x + 11) \cdot 315 = 11 970.

Решим уравнения:

1. $$ (327x - 5295) : 57 = 389 $$

   $$ 327x - 5295 = 389 \cdot 57 $$

   $$ 327x - 5295 = 22173 $$

   $$ 327x = 22173 + 5295 $$

   $$ 327x = 27468 $$

   $$ x = 27468 : 327 $$

   $$ x = 84 $$

2. $$ (27x + 11) \cdot 315 = 11970 $$

   $$ 27x + 11 = 11970 : 315 $$

   $$ 27x + 11 = 38 $$

   $$ 27x = 38 - 11 $$

   $$ 27x = 27 $$

   $$ x = 27 : 27 $$

   $$ x = 1 $$

Ответ: 1) x = 84; 2) x = 1