3 5 x 0 12 July 8, 2019 16 32 64 128 X 5 x 3 12x 0 X 5 7x 3 12x 0 3 14 x 0 5 4 2x 12 3 x 5 2 12 0 3 x 5 2 12 ≥ 0 0 4 x 10 3 5 x 12 5 3 3x 12 5 3 5 x 0 3 x-5=x+3 5 x 0 3 x 0