2 x 2 7x 12 1 July 8, 2019 16 32 64 128 X 2 7x 1 12 0 X 2 16 2 x 2 7x 12 2 0 X 3 7x 2 4x 12 x 2 7x 12 x 1 X 2 7x 12 4x 2 12x X 2 7x 12 x 2 16 2x 7 2 - x = 12 + 7x