Bonjour pouvez-vous m’aider s’il vous plaît.

A. -5 est il solution de 2x-3=7x+8

B. 7 est il solution de 5(2x-4)=7x+1

Merci.

By: USER9756
27 Agustus 2025 mathematiques 5 minutes
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166 views 166 comments 13 shares
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Question

Grade: Education Subject: mathematiques
Bonjour pouvez-vous m’aider s’il vous plaît.

A. -5 est il solution de 2x-3=7x+8

B. 7 est il solution de 5(2x-4)=7x+1

Merci.
Asked by:
166 Viewed 166 Answers

Answer (166)

Best Answer
(483)

Réponse :

A.2x-3=7x+8

  2*(-5)-3=-13

  7*(-5)+8=-27

Dcp -5 n'est pas une solution de l'équation 2x-3=7x+8

B.5(2x-4)=7x+1

 5(2*7-4)=50

 7x+1=50

Dcp 7 est une solution de l'équation 5(2x-4)=7x+1

Answered on 27 Agustus 2025

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