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EvilMaths
@EvilMaths
January 2021
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Je n'y arrive pas pouvez-vous m'aider svp ?
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calinizou
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Bonjour
périmétre=(L+l)*2
donc (3x+x+2) *2=45
6x+2x+4=45
8x+4=45
8x=45-4=41
x=41:8=5.125
longueur=3x=3*5.125=15.375
largeur=x+2=5.125+2=7.125
tu vérifie (15.375+7.125)*2=
22.5 *2= 45
: veut dire diviser
* veut dire multiplier
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EvilMaths
May 2019 | 0 Respostas
Svp aider moi pour un dm de math ? Urgent pour aujourd'hui !!
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Verified answer
Bonjourpérimétre=(L+l)*2
donc (3x+x+2) *2=45
6x+2x+4=45
8x+4=45
8x=45-4=41
x=41:8=5.125
longueur=3x=3*5.125=15.375
largeur=x+2=5.125+2=7.125
tu vérifie (15.375+7.125)*2=
22.5 *2= 45
: veut dire diviser
* veut dire multiplier