Aider moi équation niveau 4 eme: A:5x+3=2x+6 B:3x-4=-4x+17 C:2x-2=3x+11 D:3x+1=-2x+11 AVEC CALCUL SVP
Mathématiques
Lol13300
Question
Aider moi équation niveau 4 eme: A:5x+3=2x+6 B:3x-4=-4x+17 C:2x-2=3x+11 D:3x+1=-2x+11 AVEC CALCUL SVP
2 Réponse
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1. Réponse Anonyme
a) 5 x +3 = 2 x + 6
5 x - 2 x = 6 - 3
3 x = 3
x = 1
b) 3 x - 4 = - 4 x + 17
3 x + 4 x = 17 + 4
7 x = 21
x = 3
c) 2 x - 2 = 3 x + 11
2 x - 3 x = 11 + 2
- x = 13
x = - 13
d) 3 x + 1 = - 2 x + 11
3 x + 2 x = 11 - 1
5 x = 10
x = 2 -
2. Réponse aminerbt
A)
5x +3 = 2x + 6
5x - 2x = 6 - 3
3x = 3
x=3/3
x = 1
B)
3x - 4 = -4x + 17
3x + 4x = 17 + 4
7x = 21
x=21/7
x = 3
C)
2x - 2 = 3x + 11
2x - 3x = 11 + 2
-x = 13
x = -13
D)
3x + 1 = - 2x + 11
3x + 2 x = 11 - 1
5x = 10
x=10/5
x = 2