Răspuns :
Matei = 9 mingi
Andrei = 4 x 9 = 36 mingi
Andrei + Matei = 9 + 36 = 45 mingi impreuna
Andrei = 4 x 9 = 36 mingi
Andrei + Matei = 9 + 36 = 45 mingi impreuna