Bonjours vous pourriez m'aidez a cette exercice de math :J'ai choisit un second nombre.J'y ai ajouté 4 puis j'ai diviser le resultat par 13.Je trouve 20.
Ecris une expression qui permet de trouver ce second nombre.

Merci bcp

By: USER5995
25 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjours vous pourriez m'aidez a cette exercice de math :J'ai choisit un second nombre.J'y ai ajouté 4 puis j'ai diviser le resultat par 13.Je trouve 20.
Ecris une expression qui permet de trouver ce second nombre.

Merci bcp
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Answer (242)

Best Answer
(168)
soit x ce nombre; on a l'équation:
(x+4) / 13 = 20
x+4= 13*20   => produit en croix
x+4 = 260
x = 260-4
x = 256

Answered on 25 Agustus 2025
(56)
(x + 4) : 13 = 20 x + 4 = 20 x 13 x = 260 - 4 x = 256
Answered on 25 Agustus 2025

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