2 9 4 7 July 8, 2019 16 32 64 128 2 9 4 7 5 6 2 4 9 7 )+ 1 9 2 4 7 1 8 2 4 9 7 8 2 4 9 7 5 2 (- 9 7x )+ 4 2 9 x 4 7 7 2 * 9 4 77 2 9 х 4 7 9 2 7 4 1 5 6 2 9 4 7 3 2 9 0 4 7 5 2 9 3 4 7 2 x 9 )- 7x 4 4x 2 9 =- 7x 4