Fitzgerald Bob
07/18/2024 · Primary School
31 In un ufficio postale sono presenti 42 persone. La metà dei presenti deve pagare dei bollettini, i \( \frac{3}{7} \) devono effettuare operazioni finanziarie. Quanti in- vece hanno bisogno di utilizzare gli altri servizi?
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3 persone hanno bisogno di utilizzare altri servizi.
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