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Laeti3
@Laeti3
May 2019
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Bonjour,
J’aurai besoin d’aide pour cet exercice de maths ; niveau 3e
Merci d’avance !
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Verified answer
Bonjour
on nomme AE x
périmètre AEFB = 2 ( x + 18) = 2 x + 36
périmètre EDFC = 2 ( 18 + 24 - x ) = 36 + 48 - 2 x = - 2 x + 84
- 2 x + 84 = 2 ( 2 x +36)
- 2 x + 84 = 4 x + 72
- 2 x - 4 x = 72 - 84
- 6 x = - 12
x = 2
AE doit être égal à 2
1 votes
Thanks 1
Laeti3
Merci beaucoup
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pouvez vous m'aider? merci d'avance :)
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Verified answer
Bonjouron nomme AE x
périmètre AEFB = 2 ( x + 18) = 2 x + 36
périmètre EDFC = 2 ( 18 + 24 - x ) = 36 + 48 - 2 x = - 2 x + 84
- 2 x + 84 = 2 ( 2 x +36)
- 2 x + 84 = 4 x + 72
- 2 x - 4 x = 72 - 84
- 6 x = - 12
x = 2
AE doit être égal à 2