To solve the inequality \( Y + 3 < 12 \):
- Subtract 3 from both sides: \[ Y < 12 - 3 \] \[ Y < 9 \]
So, the solution to the inequality is \( Y < 9 \).
As for the condition involving \( A \), since \( A \) is stated to be a number greater than 0, it is not directly relevant to solving the inequality itself. If you need to relate \( Y \) to \( A \) or if \( A \) has a specific role in a broader context, please provide more details!