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Precilia1
@Precilia1
April 2019
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Bonsoir a tous Veuillez m'aider SVP c'est urgent Merci d'avance (exercice en pièce jointe)
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Commentaires (1)
1)
5x + 2y - 5x - 18 = 12 - 40
-3y = -28
y = 28/3
on remplace dans une équation :
5x + 2*(28/3) = 12
5x + 56/3 = 12
5x = -20/3
x = -4/3
2)
on remplace x et y par les valeurs données :
10*1+4*3.5 = 24
3*1+6*3.5 = 24
3)
n = noir
d = dorée
d'après le système de la question 2) :
n = 1 et d = 3.5
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precilia1
Merciii
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Lista de comentários
5x + 2y - 5x - 18 = 12 - 40
-3y = -28
y = 28/3
on remplace dans une équation :
5x + 2*(28/3) = 12
5x + 56/3 = 12
5x = -20/3
x = -4/3
2)
on remplace x et y par les valeurs données :
10*1+4*3.5 = 24
3*1+6*3.5 = 24
3)
n = noir
d = dorée
d'après le système de la question 2) :
n = 1 et d = 3.5