Simple Subtraction Fffe13

1. The problem is to calculate $20 - 12$. 2. The subtraction operation means we take 12 away from 20. 3. Using the formula for subtraction: $$a - b = c$$ where $a=20$ and $b=12$. 4. Calculate: $$20 - 12 = 8$$. 5. Therefore, the answer is 8.