What is this equation problem 3n+16=7n

If you mean what is n, then n = 4

So I'm pretty good at these, so I'll put it in the best detail I can. I'm guessing you need to solve for n.

So here's your problem:
3n+16=7n

First off, you should switch it around so you don't have to deal with negatives:
7n=3n+16

Subtract 3n from both sides:
4n=16

Divide both sides by 4
n=4

That would be your answer, n=4. Hope this helps, have a wonderful day!

(brainliest is always appreciated)