Răspuns :
fie a b si c cele 3 numere
b=2*a
c=2*a+14
a+2a+2a+14=1229
5a=1215
a=243
b=486
c=500
b=2*a
c=2*a+14
a+2a+2a+14=1229
5a=1215
a=243
b=486
c=500
a+b+c=1229
b=2a
c=2a+14
a+2a+2a+14=1229
5a+14=1229
5a=1215
a=243
b=486
c=500
b=2a
c=2a+14
a+2a+2a+14=1229
5a+14=1229
5a=1215
a=243
b=486
c=500