8) (x + 13,216) - 24,83 = 5,17;

Решение:

\( x + 13,216 = 5,17 + 24,83 \)

\( x + 13,216 = 30 \)

\( x = 30 - 13,216 \)

\( x = 16,784 \)

Ответ: \( x = 16,784 \).