Răspuns :
a+b+c=5413
a+b=2785 =>c=5413-2785 =>c=2628
c=b+689 =>b=2628-689 =>b=1939
a+1939+2628=5413 =>a=5413-4567 =>a=846
a+b=2785 =>c=5413-2785 =>c=2628
c=b+689 =>b=2628-689 =>b=1939
a+1939+2628=5413 =>a=5413-4567 =>a=846
5413-2785=2628 al treilea nr
2628-689=1939 al doilea nr
5413-2628-1939=846 astept coroana