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zafaracana
@zafaracana
June 2021
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Aider moi svp!! Je ne comprend rien au math!!
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MichaelS
Verified answer
Exo 1
3(-4x + 8) + 3x - 4(2x - 5) = 4x
-12x + 24 + 3x - 8x + 20 - 4x = 0
-21x + 44 = 0
-21x = -44
x = -44/-21
exo 2 :
(14 + 12 + 16 + x)/4 = 13.75
14 + 12 + 16 + x = 55
x = 55 - 14 - 12 - 16
x = 13
exo 3 :
ABCD est un carré si 3x + 4 = 2x + 7
x = 3
1 votes
Thanks 1
zafaracana
les deux premier exo ne sont pas correcte !! desole
MichaelS
je ne vois pas d'erreur..où sont-elles ?
zafaracana
oui aufaite je me suis tromper et tu a bien raison merci beaucoup
MichaelS
pas de soucis ;)
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Aider moi !! Merci a ce qui m'aide
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Verified answer
Exo 13(-4x + 8) + 3x - 4(2x - 5) = 4x
-12x + 24 + 3x - 8x + 20 - 4x = 0
-21x + 44 = 0
-21x = -44
x = -44/-21
exo 2 :
(14 + 12 + 16 + x)/4 = 13.75
14 + 12 + 16 + x = 55
x = 55 - 14 - 12 - 16
x = 13
exo 3 :
ABCD est un carré si 3x + 4 = 2x + 7
x = 3