Short Answer 
To determine your year of birth, first identify your age and the current year. For example, if you are 15 years old in 2023, subtract your age from the current year to find that you were born in 2008.
Step 1: Identify Your Age
To find out the year you were born, start by noting your age. In this case, your age is 15. Age is simply the number of complete years that have passed since you were born.
Step 2: Know the Current Year
Next, you need to determine the current year. For our example, let’s say the current year is 2023. This will be essential for calculating your year of birth accurately.
Step 3: Calculate Your Year of Birth
Finally, perform the calculation to find out your year of birth. You will use the formula:
- Year of Birth = Current Year – Age
- Year of Birth = 2023 – 15
- Year of Birth = 2008
Thus, if you are 15 years old in 2023, you were born in the year 2008.