Can someone explain to me what is n? I was very confused about this problem and my teacher didn’t review it in class! (Don’t mind the answer choice that appears on the document)

Answer:
n = 5
Step-by-step explanation:
5 * (n/5) = 5 / (n/5)
(5 * n) /5 = 5 * (5/n)
n = ( 5*5) / n
n = 25/n
n² = 25
n = 5