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Zoesmtt
@Zoesmtt
May 2019
2
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Aidez moi pour le 26 svpp
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Anidra
Verified answer
Le nombre de départ est 7 :
7+11=18
18x3=54
54-3=51
0 votes
Thanks 1
zoesmtt
merci!
MonsieurFirdown
Verified answer
Bonjour
♤ Soit x ce nombre on a donc :
● x + 11
● (x+11)×3
● (x+11)×3 - 3 = 51
♤ On Resoud alors cette équation :
(x+11)×3 - 3 = 51
3x + 33 - 3 = 51
3x + 30 = 51
3x = 21
x = 21/3 d'où x = 7
Voilà ^^
1 votes
Thanks 2
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Lista de comentários
Verified answer
Le nombre de départ est 7 :7+11=18
18x3=54
54-3=51
Verified answer
Bonjour♤ Soit x ce nombre on a donc :
● x + 11
● (x+11)×3
● (x+11)×3 - 3 = 51
♤ On Resoud alors cette équation :
(x+11)×3 - 3 = 51
3x + 33 - 3 = 51
3x + 30 = 51
3x = 21
x = 21/3 d'où x = 7
Voilà ^^