Răspuns :
4/4-1/4=3/4
3/4=363 probleme a rezolvat
1/4=363:3=121 probleme mai are de rezolvat
363+121=484 probleme are culegerea
3/4=363 probleme a rezolvat
1/4=363:3=121 probleme mai are de rezolvat
363+121=484 probleme are culegerea