5x 9 2x 180 July 8, 2019 16 32 64 128 5x 9 2x 4 180 5x 9 2x 60 180 5x 21 2x 9 180 5x 14 x 5 2x 9 180 2x 13 5x 9 180 5x 13 4x 2 2x 9 180 7x 41 5x 12 2x 9 180 14x 4 5x 1 2x 9 180 5x2 + 9x - 18 = 0