1 5 12 7 9 July 8, 2019 16 32 64 128 4x 1 12 7 4 5 x 9 11 5 12 3х 1 5 12 7 9х 11 5 12 3x 1 5 12 7 9x 5 (- 9m 1 )- 7 =- 12
