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Valsi
@Valsi
April 2019
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Resoudre :
Une cargaison de 31 caisses pese 561kg
Des caisses pesent 23kg et d'autres 15kg
Mettre en equation, et conclure le nombre de caisses de 23kg
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caylus
Verified answer
Bonjour,
soit x le nombre de caisses à 23kg
31-x le nombre de caisses à 15kg
On a 23*x+(31-x)*15=561
=>23x-15x+465=561
=>8x=561-465
=>x=12
Il ya donc 12 caissses à 23kg
et 31-12=19 caisses à15kg.
3 votes
Thanks 5
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Verified answer
Bonjour,soit x le nombre de caisses à 23kg
31-x le nombre de caisses à 15kg
On a 23*x+(31-x)*15=561
=>23x-15x+465=561
=>8x=561-465
=>x=12
Il ya donc 12 caissses à 23kg
et 31-12=19 caisses à15kg.