1 3 x 7 8 9 14 July 8, 2019 16 32 64 128 1 3 х 7 8 9 14 1 3/7 х 14 1 8 + 3 7 1 7/8 / (8 1/3) = x / (4/9) 1 -7 3 -4 9 -1
