Răspuns :
AB=2•BC+1
AC=4+AB
AC+AB+BC=36
4+AB+AB+BC=36
4+2•BC+1+2•BC+1+BC=36
6+6•BC=36
6•(1+BC)=36
1+BC=36:6=6
BC=6-1=5
AB= 2•5+1=11
AC=4+11=15
AB=BC+1
AC=AB+4=BC+1+4
P=36
AB+BC+AC=36
BC+1+BC+BC+1+4=36
4xBC=36-4-1-1
BC=30:3
BC=10
AB=BC+1=11
AC=AB+4=15
AC=AB+4=BC+1+4
P=36
AB+BC+AC=36
BC+1+BC+BC+1+4=36
4xBC=36-4-1-1
BC=30:3
BC=10
AB=BC+1=11
AC=AB+4=15