Răspuns :
a+b=469
a:b=5 rest 13 → a=5b+13
_------------------_
5b+13+b=469
6b=469-13 [456]
b=456:6=76
a=76•5+13=380+13=393
a:b=5 rest 13 → a=5b+13
_------------------_
5b+13+b=469
6b=469-13 [456]
b=456:6=76
a=76•5+13=380+13=393