7 12 х 4 5 1 3 5 6 July 8, 2019 16 32 64 128 5 7 - 4 1/2 12 7-4 5х=8 29 12 7-4 5x=8 29 6 7 - 4 5/12 5/12 + 7/12 x 1 3/7
