Salut j'ai besoin d'aide ça fait une heure que je bloque sur une question d'un dm :

Voici un programme de calcul.
•choisir un nombre relatif.
•Multiplier par -3 .
•Ajouter -5 .

2) Léa a obtenu 1 avec ce programme de calcul. Quel nombre avait-elle choisi au départ ?

Ducoup pouvez vous m'aider?
merci d'avance .​

By: USER9679
26 Agustus 2025 mathematiques 5 minutes
4.5
371 views 371 comments 13 shares

Question

Grade: Education Subject: mathematiques
Salut j'ai besoin d'aide ça fait une heure que je bloque sur une question d'un dm :

Voici un programme de calcul.
•choisir un nombre relatif.
•Multiplier par -3 .
•Ajouter -5 .

2) Léa a obtenu 1 avec ce programme de calcul. Quel nombre avait-elle choisi au départ ?

Ducoup pouvez vous m'aider?
merci d'avance .​
Asked by:
371 Viewed 371 Answers

Answer (371)

Best Answer
(186)

bonsoir

x

- 3 x

- 3 x - 5

- 3 x - 5 = 1

- 3 x = 1 + 5

- 3 x = 6

x = - 2

elle a choisi  - 2

Answered on 26 Agustus 2025

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