Ответ:
1) 16 1/2 (или 16,5)
2) 80
3) -22
Пошаговое объяснение:
1) |y - 4 1/2| + 3|x + 1/2|
x = -5 1/2, y = 3 ⇒ |3 - 4 1/2| + 3|-5 1/2 + 1/2| = |-1 1/2| + 3|-5| = 1 1/2 + 3 ⋅ 5 = 1 1/2 + 15 = 16 1/2
2) 3|-y| + 7|4 + x|
x = 7, y = -1 ⇒ 3 ⋅ |-(-1)| + 7 ⋅ |4 + 7| = 3 ⋅ |1| + 7 ⋅ |11| = 3 ⋅ 1 + 7 ⋅ 11 = 3 + 77 = 80
3) 4x - |x + 3|*
x = -5 ⇒ 4 ⋅ (-5) - |-5 + 3| = -20 - |-2| = -20 - 2 = -22
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* Там же модуль, верно?