Here you have an equation A = p + prt and you are being asked to solve for t, or in math speak, get t in terms of everything else. Step 1: Subtract p from both sides A - p = p - p + prt A - p = prt Step 2: Divide both sides by pr A - p = prt pr pr A - p = t pr if a = b then b = a, so ... T = A - p pr For more great basic algebra help you can go here. I hope this helps
