To solve, make an equation. The equation would be x represents the miles driven to solve, subtract 4 from each side of the equation. $32-4 = 4-4 + 2x The equation is now $28 = 2x Now you divide by 2 on each side. $28 ÷ 2 = 2x ÷ 2 simplify 14 = x The answer is 14 miles