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Alin si Adrian au 35 nuci.Cate nuci are fiecare stiind ca Adrian are de 4 ori mai multe decat Alin?Rezolvati cu ajutorul ecuatiilor

Răspuns :

a+b=35
a=4xb
4b+b=35
5b=35
b=7 (nuci are Alin)
a=7x4=28( nuci are Adrian)