A12-foot board is to be cut into 5 pieces. four of the pieces will be the same length and one piece will be 2 feet longer than the other four. which equation could be used to solve for the lengths? a)x + x + x + x + 2x = 12 b)x + x + x + x + x - 2 = 12 c)x + x + x + x + x = 12 + 2 d)x + x + x + x + x + 2 = 12