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Ajutor aici va rooog...!

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Răspuns :

[tex]( \frac{1}{2} + \frac{1}{3} ):0,(3)-2,5= \frac{5}{6} : \frac{1}{3} -2 \frac{5}{10} = \frac{5}{2} - \frac{5}{2} =\boxed{0}.[/tex]