21 3 7 2 x 5 July 8, 2019 16 32 64 128 21 3 7 2x )= 5 2 x 9 21 3 7 2х )= 5 2 х 9 13 21 x 2 5 7 3 14 3 7 2 21 x 5 6 21 7 2 5 2x 3 4 5 x 7 = 35
