Bonjour
Résoudre les équations suivantes :
a) 4 x = 2 x + 3
4x - 2x = 3
2x = 3
x = 3/2
b) 7 x - 2 = 5 - X
7x + x = 5 + 2
8x = 7
x = 7/8
c) 11 + 8 x = 2 - 3 x
8x + 3x = 2 - 11
11x = - 9
x = - 9/11
d) 6 - 3 x = - x + 1
- 3x + x = 1 - 6
- 2x = - 5
x = 5/2.