Answer:
q=45
Explanation:
To do this we have to isolate q.
q is being divided by 3, so to reverse that we have to multiply it by 3.
However, in an equation, what you do to one side, you must do to the other. This is so the equation stays equal.
15=q/3
That said, what we can do is multiply the entire equation by 3.
45=q
So the solution to the equation is 45.