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Johanna92
@Johanna92
April 2019
2
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Pouvez vous m'aider avec cet exercices d'équations ?
1) 3x + 5 = -2x + 4
2) 2x - 5 = 3x - 7
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garekilou
C'est très simple ! Il faut que tu regroupe les x d'un côtés et les autre de l'autre
0 votes
Thanks 1
Johanna92
dois-je changer les signes (+,-,....) quand je change le nombre de cotés?
garekilou
Ouii
garekilou
Ah bah il t'a fait l'exercice... C'est un peu bête. Essaie quand même de t'entraîner tu verras c'est simple
PAU64
1) 3x + 5 = - 2x + 4
3x + 2x = 4 - 5
5x = - 1
x = - 1/5
x = - 0,2
2) 2x - 5 = 3x - 7
2x - 3x = - 7 + 5
- x = - 2
x = 2
2 votes
Thanks 1
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2x-1/x-3 = 7/2 EQUATION AIDEZ MOI SVPPPP :((
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2x/3 = 5/6 EQUATION AIDEZ MOI SVPP! :((((
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3x + 2x = 4 - 5
5x = - 1
x = - 1/5
x = - 0,2
2) 2x - 5 = 3x - 7
2x - 3x = - 7 + 5
- x = - 2
x = 2