Winston is solving the equation 5x - 3(10 - 2x) = 9(2x + 6). the following shows the steps he has used so far to solve the equation step 1: 5x - 3(10) - 3(-2x) = 9(2x) + 9(6) step 2: 5x - 30 + 6x = 18x + 54 which statement describes a possible next step that winston can use to solve this equation? question options: a] subtract 30 from both sides of the equation. b] add 6x to both sides of the equation. c]add 18x to both sides of the equation. d] subtract 5x from both sides of the equation.