Răspuns :
a+b+c=611
a_
b__(+4)
c__(+7)
611-11(4+7)=600
600:3=200(a)
200+4=204(b)
200+7=207(c)
Verificare:200+
204
207
____
611
a_
b__(+4)
c__(+7)
611-11(4+7)=600
600:3=200(a)
200+4=204(b)
200+7=207(c)
Verificare:200+
204
207
____
611