7x 4 2x 1 x 2 July 8, 2019 16 32 64 128 3 (- 7x 4 )- 7x 1 2x 1 2 x 2 2x 2 7x 4 x 2 16 1 7x 1 4 1 3 2x 1 x 2 )= 10 3 7x 1 4 1 3 2x 1 x 2 )= 19 3 7x 1 4 1 7 2x 1 x 2 )= 4 2x 4 3x 1 7x 2 x 2x 7
