Răspuns:
a+b+c=377
a |........|
b |........|........|.......|
c |........|.........|.......|......|......|.......|......|.....|......|
aflam primul numar (a):
377:13=29(a)
aflam numarul al doilea(b):
29×3=87(b)
aflam numarul al treilea(c)
87×3=261(c)
v:29+87+261=377suma)
coroana!!
