Bonjour
Résoudre les équations suivantes :
a) 5x - 11 = 1
5x = 1 + 11
5x = 12
x = 12/5
b) 16x - 5 = 9
16x = 9 + 5
16x = 14
x = 14/16
x = 7/8
c) 6,5 – 3,3x = 4,7x + 9,5
- 3,3x - 4,7x = 9,5 - 6,5
- 8x = 3
x = - 3/8
d) 3x - 5 - x + 6 = 5x + 3
3x - x - 5x = 3 + 5 - 6
- 3x = 2
x = - 2/3
e) 7(x - 2) + x - 8 = 3r_4 --> Erreur d'expression
f) 9(x + 4) - 6(3 - x) = 5x – 8
9x + 36 - 18 + 6x = 5x - 8
9x + 6x - 5x = - 8 - 36 + 18
10x = - 26
x = - 26/10
x = - 14/5
g) 5(2x + 3) - (4x + 7) = 8 – 5x
10x + 15 - 4x - 7 = 8 - 5x
10x - x + 5x = 8 - 15 + 7
14x = 0
x = 0.