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Lstein
@Lstein
May 2019
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Bonjour, j'ai besoin d'aide pour résoudre cette équation :
2(3-x)-5x = -3(2x-5)
Merci d'avance !
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swnn
Verified answer
2(3-x)-5x = -3(2x-5)
2*3+2*(-x)-5x = -3*2x-3*(-5)
6-2x-5x = -6x+15
6-7x = -6x+15
-7x+6x = 15-6
-x = 9
x = -9
1 votes
Thanks 1
lstein
Super merci !
Commentaires (1)
2(3 - x) - 5x = -3(2x - 5)
6 - 2x - 5x = -6x + 15
6 - 7x = -6x + 15
-7x + 6x = 15 - 6
-x = 9
x = -9
1 votes
Thanks 0
lstein
Je crois qu'il y a une erreur. Si tu as distribué, à la ligne 2, -3*(-5) = 15 et non pas 16
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Verified answer
2(3-x)-5x = -3(2x-5)2*3+2*(-x)-5x = -3*2x-3*(-5)
6-2x-5x = -6x+15
6-7x = -6x+15
-7x+6x = 15-6
-x = 9
x = -9
6 - 2x - 5x = -6x + 15
6 - 7x = -6x + 15
-7x + 6x = 15 - 6
-x = 9
x = -9