Salut s'il vous plaît aidez moi je dois calculer B= 9sur105 × -12sur15 × 21sur-18 c'est urgent merci d'avance

By: USER6266
28 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Salut s'il vous plaît aidez moi je dois calculer B= 9sur105 × -12sur15 × 21sur-18 c'est urgent merci d'avance
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Answer (111)

Best Answer
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Tu fais 3 x 3 x -3 x 4 x 3 x 7 sur 5 x 7 x 3 x 3 x  5 x -3 x 6 
ça fait donc  4 x 3 sur 5 x 5 x 6 = 2 x 2 x 3 sur 5 x 5 x 3 x 2

ça fait  2 sur 5 x 5 = 2 sur 25

(Tu réécris tout mais tu barres les nombres soulignés)
Answered on 28 Agustus 2025

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