valentinabeurre valentinabeurre
  • 21-01-2024
  • Mathematics
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Bonjour je n’arrive pas à faire cette exercice de maths niveau 4e j’ai besoin d’aide svp ( mrc d’avance)

Dans un sac il y a 18 billes rouges de plus que de billes noires.
On désigne par (a) le nombre de billes noires.

A) Exprimer le nombre de billes rouges en fonction de a.
B) Exprimer alors le nombre total de billes en fonction de (x).

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