Final Gravity Formula

The basic ABV formula is -

ABV = (OG - FG) * 131.25

If you knew the ABV and Original Gravity does anyone know how to re-write the equation to solve for Final Gravity?

Elementary algebra, my dear Watson:

FG = OG - (ABV / 131.25)

Got it, thanks. I figured it would be something like that. Appreciate the help.