2 7 3 4 11 July 8, 2019 16 32 64 128 2 3 4 7 x 11 21 2 3 4 х 7 11 X 2 3 x 7 3 11 4 2 m 3 )- 4 3 m 7 )+ 11 3 5z 7 2 9z 11 4 8z 13 1 3 7 x 2 5 x 4 11 3 5z 7 2 9z 11 4 8z 3 5z 7 )- 2 9z 11 )= 4