7 0 x 7 2 July 8, 2019 16 32 64 128 1 1 7 x 0 2 7 7 7 0 x 4 2 X 7 )( 2x 7 )= 0 3x x 7 )- 2 x 7 )= 0 7 2x 7 x 12 0 7 x 70 0 7 x 7 0 - 7