Решение:
- Первое уравнение:
\( 7x + 4 = 22 + 17 \)
\( 7x + 4 = 39 \)
\( 7x = 39 - 4 \)
\( 7x = 35 \)
\( x = \frac{35}{7} \)
\( x = 5 \) - Второе уравнение:
\( 50 + 4x = 82 \)
\( 4x = 82 - 50 \)
\( 4x = 32 \)
\( x = \frac{32}{4} \)
\( x = 8 \) - Третье уравнение:
\( 3(x + 6) - 23 = 16 \)
\( 3x + 18 - 23 = 16 \)
\( 3x - 5 = 16 \)
\( 3x = 16 + 5 \)
\( 3x = 21 \)
\( x = \frac{21}{3} \)
\( x = 7 \)
Ответ: x = 5, x = 8, x = 7.