Răspuns :
a+b+c= 168 => 168:3=56 => numerele sunt 54, 56, 58
Proba: 54+56+58= 168
Proba: 54+56+58= 168
a+a+1+a+2=168
3a=168-3=165
a=165:3
a=55
55+1=56
55+2=57
V: 55+56+57=168
3a=168-3=165
a=165:3
a=55
55+1=56
55+2=57
V: 55+56+57=168