Решение:
16 ⋅ |x - 5| - |-x - 5| при x = 3
16 ⋅ |3 - 5| - |-3 - 5| = 16 ⋅ |-2| - |-8| = 16 ⋅ 2 - 8 = 32 - 8 = 24
Ответ: 24