8 6 x 3 9 July 8, 2019 16 32 64 128 X 8 6 9 3 5 X 6 9x 3 8 0 X 6 9x 3 8 15 8 3 6 x 5 9 8 7 9 x 3 5 6 9 ( 7 8 x )= 3 6 X 6 3 1 9 2 8 3 8 x )+ 9 6 2x 7 22 3 9 8 x 6 4 4 8 x 6 3 x 9 6 15 x 8 3 9 8 25 x 3 1 6 9 10 6 x 2 )+ 8 2x 3 )=- 9 61 9 7 8 x 6 3 4 2x 3 9 8 6 x