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Cat face ca numar rational 3+1/2?

Răspuns :

XNaClx
[tex] \frac{3 + 1}{2} = \frac{4}{2} = \frac{2}{1} = 2[/tex]
3 +1/2 =6/2+1/2=7/2

[tex]\it 3 + \dfrac{1}{2} =3\dfrac{1}{2} =\dfrac{7}{2} \in \mathbb{Q}[/tex]  


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