2 3 1 2 х 7 6 1 3 July 8, 2019 16 32 64 128 2 3 1 2 x 7 6 1 3 2 3 x 5 4 1 2 x 7 6 1 3 2 7х-1 3х+3 6=2 2 6/7 ÷ 1 3/7
