Can someone explain this to me? I don't understand how they got from what I labeled 1 to what is labeled 2. Where did the 1/3 come from?

Step-by-step explanation:
Using exponent rules:
3^(n+1) = 3^(n) 3^(1)
So:
3^n / 3^(n+1)
= 3^n / (3^n × 3)
= 1 / 3
Answer:
see attached
Step-by-step explanation:
see attached