Lorena are de 5 ori mai multe timbre decat Alina. Daca Lorena I-ar da Alinei 60 timbre, atunci ar avea aceleasi nr. de timbre. Cate timbre are fiecare?
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A-nr timbre Alina
L=5A
L-60=A+60
5A-60=A+60
5A-A=60+60
4A=120
A=30 de timbre
L=5*30
L=150 de timbre
Alina are 30 de timbre, iar Lorena 150 de timbre