Résoudre les équations:
a : 2x + 5 = 15 - 3x
b : - 6x + 4 = -1 - x
c : 7m + 10 = m - 8
d : - 12y = 4 - 13y.
Svp aider moi c'est pour demain!!!

By: USER5541
28 Agustus 2025 mathematiques 5 minutes
4.5
180 views 180 comments 13 shares

Question

Grade: Education Subject: mathematiques
Résoudre les équations:
a : 2x + 5 = 15 - 3x
b : - 6x + 4 = -1 - x
c : 7m + 10 = m - 8
d : - 12y = 4 - 13y.
Svp aider moi c'est pour demain!!!
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Answer (180)

Best Answer
(482)
Bonjour,

Résoudre les équations :
a : 2x + 5 = 15 - 3x 
2x + 3x = 15 - 5
5x = 10
x = 10/5
x = 2

b : - 6x + 4 = -1 - x 
- 6x + x = - 1 - 4
- 5x = - 5
x = 5/5
x = 1

c : 7m + 10 = m - 8
7m - m = - 8 - 10
6m = - 18
m = - 18/6
m = - 3

d : - 12y = 4 - 13y
- 12y + 13y = - 4
y = - 4
Answered on 28 Agustus 2025
(231)
2x+5=15-3x
2x+3x=-5+15
5x=10
x=2 

-6x+4=-1-x
-6x+x=-4-1
-5x=-5
x=1

7m+10=m-8
7m-m=-10-8
6m=-18
m=-3

-12y=4-13y
-12y+13y=4
y=4


Answered on 28 Agustus 2025

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