2 5 7 9 14 July 8, 2019 16 32 64 128 2 5 14 х 7 9 Lcd of 2 7 5 21 and 9 14 1 14 x 2 5 x 7 9 14 2 5 a 10 11 7 9 b 7 2x 9 − 2 5 14 3
