1 3 x 9 )= 2x 7 July 8, 2019 16 32 64 128 1 7x 3 2x x 9 1 9 * 3 2x 729 * 3 x 1 x 3 1 2x 1 11 7x 9 3 x 2 )+ 2x 7 x 1 )+ 9 3 x 3 = 9