X 13 =- 5 26 July 8, 2019 16 32 64 128 7 13 x 5 26 7 13 5 26 x 13 4 8 5 13 x 4 5 26 5 13 x 26 15 13 25 x 5 26 5/13 = x/52 13 x 6 5 5 13 x
