Răspuns :
Fie a,b,c-numerele
a=a
b=a+1
c=b+1=a+1+1=a+2
a+b+c=219
a+a+1+a+2=219
3a+3=219
3a=219-3
3a=216
a=216:3
a=72
b=a+1=72+1=73
c=a+2=72+2=74
Fie a,b,c-numerele
a=a
b=a+1
c=b+1=a+1+1=a+2
a+b+c=219
a+a+1+a+2=219
3a+3=219
3a=219-3
3a=216
a=216:3
a=72
b=a+1=72+1=73
c=a+2=72+2=74