Résoudre les équations suivantes en détaillant votre dé marche: a. 2(x + 5) = 3(2x - 2) c. 3(x - 2) + 4 = 2 - x b. 2(x – 2) – 4(1 – x) = 4 d. 5(x + 1) = 3(3 – x
Question
marche:
a. 2(x + 5) = 3(2x - 2)
c. 3(x - 2) + 4 = 2 - x
b. 2(x – 2) – 4(1 – x) = 4
d. 5(x + 1) = 3(3 – x)
pouvez vous m'aider svp
2 Réponse
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1. Réponse Anonyme
Bjr,
2x + 10 = 6x - 6
- 4x = - 16
x = 16/4 = 4
3x - 2 = 2 - x
4x = 4
x = 1
2x - 4 - 4 + 4x = 4
6x = 4 + 8
x = 12/6 = 2
5x + 5 = 9 - 3x
8x = 4
x = 4/8 = 1/2.
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2. Réponse Ohyeohye
Bonjour,
Réponse :
a. 2(x + 5) = 3(2x - 2)
2x+10 = 6x-6
2x-6x = -6-10
-4x = -16
-4x/-4 = -16/-4
x = 4
c. 3(x - 2) + 4 = 2 - x
3x-6+4 = 2-x
3x-2 = 2-x
3x+x = 2+2
4x = 4
4x/4 = 4/4
x = 1
b. 2(x – 2) – 4(1 – x) = 4
2x-4-4+4x = 4
6x-8 = 4
6x = 4+8
6x/6 = 12/6
x = 2
d. 5(x + 1) = 3(3 – x)
5x+5 = 9-3x
5x+3x = 9-5
8x = 4
8x/8 = 4/8
x = 0.5
Voila =)