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Andrei si Mariana au impreuna 56 nuci.Andrei are de 6 ori mai multe decat Mariana.Sa se afle cate nuci are fiecare

Răspuns :

A+M= 56 nuci
A=6× M
6 M+M=56
7M=56
M=56:7=8
A=6×8=48
56×6=312(nuci are Andrei)
56:6=9(nuci are Mariana)