18 2 2x 4 July 8, 2019 16 32 64 128 2 18 3x 4 2x 10 2x 2 18 4x 2x 2 4x 18 0 X 18 2 2x 4 X 18 2x 2 4x 10 2x 2 18 4x 15 2x 2 18 40 2 1 2x )= 4x 18 18 - 4 x 2
