Resposta :

[tex]5,6666...=5+0,6666...=5+\frac{2}{3}=\frac{17}{3} \\ \\ 2,3333..=2+0,3333...=2+\frac{1}{3}=\frac{7}{3} \\ \\ \boxed{\frac{17}{3}+\frac{7}{3}=\frac{24}{3}=8}[/tex]

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