2 x 7 8x 15 July 8, 2019 16 32 64 128 Solve x 2 7 8x 15 X 2 8x 15 - 2x 7 0 X 2 8x 15 2x 7 X 2 8x 15 mod 2x 7 0 10 x 2 )+ 15 8x 7 X 7 8x 3 17 6 15x 2 Mod x 2 8x 15 2x 7 2x 7