Bonsoir
A) 4x -5 =2x+1
4x - 2x = 1 + 5
2x = 6
x = 6/2
x = 3
B)-5x+3=-3x-7
- 5x + 3x = - 7 - 3
- 2x = - 10
x = 10/2
x = 5
C)7x-9=4x+24
7x - 4x = 24 + 9
3x = 33
x = 33/3
x = 11
D)5x-6=14
5x = 14 + 6
5x = 20
x = 20/5
x = 4.
Réponse :
Explications étape par étape
A) 4x -5 =2x+1
4x - 2x = 1 + 5
2x = 6
x = 6/2
x = 3
B)-5x+3=-3x-7
- 5x + 3x = - 7 - 3
- 2x = - 10
x = 10/2
x = 5
C)7x-9=4x+24
7x - 4x = 24 + 9
3x = 33
x = 33/3
x = 11
D)5x-6=14
5x = 14 + 6
5x = 20
x = 20/5