Răspuns :
a+b+c=8702
b+c=5820
a+5820=8702
a=8702-5820
a=2882
b=a+2570
b=2882+2570
b=5452
2882+5452+c=8702
8334+c=8702
c=8702-8334
c=368
PROBA
2882+5452+368=8702
b+c=5820
a+5820=8702
a=8702-5820
a=2882
b=a+2570
b=2882+2570
b=5452
2882+5452+c=8702
8334+c=8702
c=8702-8334
c=368
PROBA
2882+5452+368=8702
5820+2570=8390 al doilea nr
8703-8390=313 al treilea nr
5820+8390+313=8703
8703-8390=313 al treilea nr
5820+8390+313=8703