5 9 х 2 9 7 9 July 8, 2019 16 32 64 128 5 9 x 2 9 7 9 7 5 9 х )- 2 2 9 6 8 9 13 2 9 х 2 5 9 7 5 9 5 + 9 = 14 5 9 - 2 9
