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2,8(6) . (6)=perioada 6
Clasa a 6a


Răspuns :

2,8(6)=(286-28)/90=258/90=86/30=43/15

[tex]2,8(6) = \it \frac{286~-~28}{90} = \frac{258}{90}^{(6} = \frac{43}{15}[/tex]