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Concursul Nicolae Paun editia 2009 subiectul I

Posted: Sun Dec 13, 2009 1:11 am
by Andi Brojbeanu
Determinati numerele natrurale nenule \( a, b, c \) pentru care:
\( \frac{3a}{a+1}=\frac{4b}{b+2}=\frac{5c}{c+3} \).

Lucian Dragomir, Otelu-Rosu