Răspuns :
a+b+c=4584
a+b=2785
b=c-689
2785+c=4584
c=4584-2785
c=1799
b=1799-689
b=1110
a+1110=2785
a=2785-1110
a=1675
Verificare : 1675+1110+1799=4584
a+b=2785
b=c-689
2785+c=4584
c=4584-2785
c=1799
b=1799-689
b=1110
a+1110=2785
a=2785-1110
a=1675
Verificare : 1675+1110+1799=4584
a+b+c=4584 a+b=2785 c=cu 689 mai mare decat b. 2785+c=4584 c=4584-2785 c=1799 b=1799-689 b=1110 a+1110+1799=4584 a=4584-(1799+1110) a=1675 R=1675+1110+1799=4584