Răspuns :
a+b+c=40
b=a-5 a=b+5
b=c-8 c=b+8
b+5+b+b+8=40
3b+13=40
3b=27
b=9
a=9+5=14
c=9+8=17
b=a-5 a=b+5
b=c-8 c=b+8
b+5+b+b+8=40
3b+13=40
3b=27
b=9
a=9+5=14
c=9+8=17