Răspuns :
Laturile sunt A,B,C
A=B+1
A=C+2
=>3×C+3=18|-3
=>C=15/3=5
=>A=7,B=6
A=B+1
A=C+2
=>3×C+3=18|-3
=>C=15/3=5
=>A=7,B=6
l1=x
l2=x+1
l3=x+2
x = P:3
x =18:3
x =6
l1=x =>6
l2=x+1=>6+1=7
l3=x+2=>6+2=8
l2=x+1
l3=x+2
x = P:3
x =18:3
x =6
l1=x =>6
l2=x+1=>6+1=7
l3=x+2=>6+2=8