8y + 12 - (- 4 - 5y) = 3
8y + 12 + 4 + 5y = 3
13y + 16 = 3
13y = - 13
y = - 1
При y = - 1 , - 4 - 5y < 8y + 12 на 3
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8y + 12 - (- 4 - 5y) = 3
8y + 12 + 4 + 5y = 3
13y + 16 = 3
13y = - 13
y = - 1
При y = - 1 , - 4 - 5y < 8y + 12 на 3
Verified answer
Решение во вложении.Ответ : y=-1