Verified Answer :

1/3n = 4....multiply both sides by 3/1 or just 3, the reciprocal of 1/3
(3/1)(1/3)n = 4 * 3/1
n = 12

N= 12

Because ⬇️⬇️

1 over 3n (4) = 0

Simplify ➡️ 1 over 3

(1 over 3
n) - 4 = 0



Subtract a whole from the fraction

4 = 4 over 1 = 4 3 over 3

N - (4
3) over 3 = n - 12 over 3


N - 12 over 3 = 0


N- 12 over 3 3 = 0 3


N - 12 = 0

And that's how I how figured that "n" = 12