Răspuns :
fie a ,b,c cele 3 numere. b=a-11; c=b+2=a-11+2=a-9;
a+a-11+a-9=112
3a-20=112
3a=132
a=44;
b=33
c=35
a+a-11+a-9=112
3a-20=112
3a=132
a=44;
b=33
c=35
A+A-11+A-11+2=112, A+A+A=112+11+11-2, 3A=134-2=132, A=132:3=44, B=44-11=33, C=33+2=35