4 4 )- 15 x July 8, 2019 16 32 64 128 4 4 15 x 1 1 2 4 2x 15 )=- 4 x 3 4 15 x 4 15 x 8 4 3 4 x 15 4 x 4 x 4 x 4x4 = 16 15 x 4 - 2
