Question

A=3n+1 solving for n

Answer 1

A=3n+1

Take the 1 to the other side, so you get

3n = A-1

And then divide both sides by three, so

n = (A-1)/3

Hope this helped :) x

Answer 2

$A=3n+1 \\ 3n=A-1 \\ n=\frac{A-1}{3}$