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Chocolat13014
@Chocolat13014
May 2019
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Salut c'est la suite de l'exercice aidez moi svp :)
Il faut faire des équations ! :)
Exercice 3:
La somme de trois nombres consécutifs est 75. Quels sont ces trois nombres ?
Exercice 4:
Un immeuble de 3 étages mesure 17,6 mètres de haut. La hauteur du toit est 1,5 fois celle d'un étage. Quelles est la hauteur d'un étage?
Merci beaucoup pour ce qui m'aide :) !
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Commentaires (2)
Bonsoir
n + n + 1 + n + 2 = 75
3 n = 72
n = 24
24; 25 et 26
étage = x
toit = 1.5 x
3 x + 1.5 x = 17.6
4.5 x = 17.6
x =
≈ 3.91 m
0 votes
Thanks 1
Chocolat13014
Merci mais j'ai pas compris l'exercice 2 ,tu peux m'expliquer stp :) ?
Chocolat13014
Ah non ce bon je viens de comprendre :)
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n + n + 1 + n + 2 = 75
3 n = 72
n = 24
24; 25 et 26
étage = x
toit = 1.5 x
3 x + 1.5 x = 17.6
4.5 x = 17.6
x = ≈ 3.91 m