Răspuns :
a+b+c=981
a=3b
c=a+85
c=3b+85
3b+b+3b+85=981
7b+85=981
7b=896
b=128
a=3*128=384
c=384+85=469
a=3b
c=a+85
c=3b+85
3b+b+3b+85=981
7b+85=981
7b=896
b=128
a=3*128=384
c=384+85=469