2 5 14 х 7 9 July 8, 2019 16 32 64 128 2 5 14 7 9 11 1 5 х 7 8 2 5 14 х 7 9 14 2 6 7 х 5 9 2 5 9 14 x 27 2 5х÷14=1/7÷30 2 7+5 14