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Giorgio ha 11 matite, cioè 3 matite più \( 1 / \) delle matite di Andrea. Quante matite ha Andrea?

Ask by Howell Park. in Italy
Mar 12,2025

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Andrea ha 16 matite.

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The Deep Dive

Se Giorgio ha 11 matite e queste sono 3 matite in più rispetto a \( \frac{1}{2} \) delle matite di Andrea, possiamo impostare un'equazione. Chiamiamo il numero di matite di Andrea \( x \). L'equazione diventa: \[ 11 = 3 + \frac{1}{2}x \] Sottraendo 3 da entrambi i lati, otteniamo: \[ 8 = \frac{1}{2}x \] Moltiplicando entrambi i lati per 2 otteniamo: \[ x = 16 \] Quindi, Andrea ha 16 matite.

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