2 5 14 7 9 July 8, 2019 16 32 64 128 2 5 14 х 7 9 1 14 x 2 5 x 7 9 14 2 5 a 10 11 7 9 b 3 2 5 3y 7 9x 10y 14 7 2x 9 − 2 5 14 3
