Question

Simplifique a expressão $3^{ -1 } - \frac{1}{2}$ ?

Answer 1

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$3^{-1}- \frac{1}{2} = \\ \\ \frac{1}{3} - \frac{1}{2} = \\ \\ mmc(3,2)=6 \\ \\ \frac{2-3}{6} =- \frac{1}{6}$