2x 9 3 x 6 5 July 8, 2019 16 32 64 128 5x 2x 9 6 x 3 X 3 2x 9 5x 6 1 18 2x 5 6 x 2 9 x 3 4 9 3 2x )=- 6 3x 5 5x 9 2x 3 3x 6 2x 5x 9 8x x 3 6 2x (- 6 4 x 5 9 )- 3 2 2x 9 )= 4x 3 5 6 x 2x 9 3 x 3 = 9