1. Реши: 2(x + 3) = 18; 3(x + 4) = 27; 5(x + 2) = 40. Ответ:

Решение:

Решаем каждое уравнение отдельно:

1. \( 2(x + 3) = 18 \)
   \( x + 3 = \frac{18}{2} \)
   \( x + 3 = 9 \)
   \( x = 9 - 3 \)
   \( x = 6 \)
2. \( 3(x + 4) = 27 \)
   \( x + 4 = \frac{27}{3} \)
   \( x + 4 = 9 \)
   \( x = 9 - 4 \)
   \( x = 5 \)
3. \( 5(x + 2) = 40 \)
   \( x + 2 = \frac{40}{5} \)
   \( x + 2 = 8 \)
   \( x = 8 - 2 \)
   \( x = 6 \)

Ответ: x = 6, x = 5, x = 6.