Răspuns :
a primul număr
b al doilea număr
a+b+b+18=122
a+2b=104
(a+b):(b+18)=4 rest 7
a+b=4 (b+18)+7
a=3b+79
3b+79+b+18+b=122
5b=5
a=72
a+b+c=122
(a+b):c=4 rest 7
b=c+18
a+b=4c+7
inlocuim in prima relatie
4c+7+c=122
5c=122-7
5c=115
c=115:5
c=23
b=23+18
b=41
a+41+23=122
a=122-64
a=58
verificare
58+41+23=122
99:23=4 rest 7
(a+b):c=4 rest 7
b=c+18
a+b=4c+7
inlocuim in prima relatie
4c+7+c=122
5c=122-7
5c=115
c=115:5
c=23
b=23+18
b=41
a+41+23=122
a=122-64
a=58
verificare
58+41+23=122
99:23=4 rest 7