2 7 4 July 8, 2019 16 32 64 128 2 7 4 9 6 2 7 4 5 2 7 4 9 2 7 4 3 2 7 4 8 2 7 4 3 5 2 7 4 6 2 7 4 1 2 7 4 21 2 7 42 2 7 4 in fraction 2 7 4 11 2 7 40 2 7 4x 2 7 4 x )= 9
