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4 pe 8 + 9 pe 8 - 5 pe 8

Răspuns :


[tex] \frac{4}{8} + \frac{9}{8} - \frac{5}{8} = \frac{13}{8} - \frac{5}{8} = \frac{8}{8} = 1[/tex]
[tex] \frac{4}{8} \: + \: \frac{9}{8} - \frac{5}{8} = \frac{13}{8} - \frac{5}{8} = \frac{8}{8}^{(8} = \mathbf{1}[/tex]