Réponse:
A) 4x - 12 = 0
A) 4x - 12 + 12 = 0 + 12
A) 4x = 12
A) x = 12/4
A) x = 3
B) 2x - 3 = 0
B) 2x - 3 + 3 = 0+ 3
B) 2x = 3
B) x = 1,5
C) 4x + 1 = 0
C) 4x + 1 - 1 = 0 - 1
C) 4x = -1
C) x = -0,25
D) 2-3x = 0
D) 2 - 3x - 2 = 0 - 2
D) -3x = -2
D) x = 2/3
-3 × 2/3 = -2
bonsoir :
4x - 12 = 0
4x = 12
× = 12/4
■x = 3 ■
4x + 1 = 0
4x = - 1
■x = -1/4■
2x - 3 = 0
2x = 3
■x = 3/2■
2 - 3x = 0
3x = 2
■× = 2/3■
