Răspuns :
fie a; a+2 si a+4 cele 3 laturi
a+a+2+a+4=573
3a+6=573
3a=573-6
3a=567
a=567/3
a=189
a+2=189+2=191
a+4=189+4=193
a+a+2+a+4=573
3a+6=573
3a=573-6
3a=567
a=567/3
a=189
a+2=189+2=191
a+4=189+4=193
a+ b + c=573
b= a+ 2
c= b+2 sau c= a+4
a=(573-2-4):3=189
b=189+2=191
c=191+2=193
Verificare 189+191+193=573