3 3 x 1 7 July 8, 2019 16 32 64 128 3 3 4 x 1 7 9 3 3 4 x 1 7 8 3 3 4 x 7 1 2 3 x 1 3 x 1 72 2 x 3 3 x 1 7 3 x 1 3 x 1 78 3 x 1 )- 7 15 3 x 1 7 8 1/3 x = 75 3 x 1 729 3 3 7 x 1 5 7 3 x 1 )= 7 2x 5 x 3 3 x 7 1 2 3 1 3 x 7 10