Răspuns :
a=9:3=3
b=3•3=9
c=9•6=54
a+b+c=3+9+54=66;
n-a+c=n-3+54=51-3+54=102
n=54-3=51
3•a=3•3=9
b•2=9•2=18
b=3•3=9
c=9•6=54
a+b+c=3+9+54=66;
n-a+c=n-3+54=51-3+54=102
n=54-3=51
3•a=3•3=9
b•2=9•2=18