Resulve esto...
2D 34 78 C2 B2 20 2B 20 31 33 20 2B 20 32 78 C2 B2 20 2D 20 33 78 20 3D 20 39 20 2D 20 37 78 20 2D 20 33 78 C2 B2
La solucion es...