Răspuns :
a+b+c=2887
a+b=1754
b+311=c
b+311=2887-1754
b+311=1133
b=1133-311
b=822
a+822=1754
a=932
c=822+311
c=1133
a+b=1754
b+311=c
b+311=2887-1754
b+311=1133
b=1133-311
b=822
a+822=1754
a=932
c=822+311
c=1133
a+b+c=2 887. a+b=1 754. 2887-1754=1133 (al treilea numar). 1133-311=1022 (al doilea numar). 1022+1133=2155(suma primelor doua numere) 2887-2155=732(primul numar). 732+1022+1133=1754+1133=2887