13 5 3 2 July 8, 2019 16 32 64 128 13 5 3 20 13 5 3 2 in fraction 13 5 21 3 13 5 22 3 13 5 2 3 4 13 5 3 9x 20 13 8 5 3 2 13 5 x 3 2 5 13 2x 3 13 5 9 3 2 13 4x 5 2x 3 )+ 4 13 4х 5 2х 3 )+ 4 13 3 5 1 2 13 − 5 3 − 2q )= 28 8 5 2x 3 )= 13 6x