1 3 8 1 4 7 July 8, 2019 16 32 64 128 1 3 x 7 8 1 4 5 3 8 1 4 7 3 7 х 1 8 3 4 1 2 1 7 8 8 1 3 x 4 9 3 1 4 minus 1 7 8 8 3 1 2x 4 7 1 8x 1 3 8 divided by 1 4 7 -1 frac 3 8 div left(-1 frac 4 7 right) =
