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Mathematics, 24.11.2019 05:31 naomicervero

Porfavor me podrían explicar como hacer este tipo de ecuaciones y el resultado? , mañana tengo examen, y no he ido a clases por motivos de salud : (

si la edad de alberta y evelyn suman 45 años y el triple de la edad de alberta es 3 años menor que la edad de evelyn ¿qué edad tiene cada una?

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