1. x + y + z = 54
2. y = 2x +3
3. z = x+y = x + 2x + 3
=> din 1,2 si 3 => x + 2x + 3 + x + y = 54 => x + 2x + 3+ x + 2x + 3 = 54 => x = 8
=> y = 19 => z = 8 + 19 = 27....... => elementele sunt O, K si Co
spor la treaba... :)
