bonjour
- 4 x = 5
x = - 5/4
- 2 x = - 6
x = 6/2 = 3
y /3 = 5
y = 15
x /2 = 25
x = 50
- 3 t = - 45
t = 45/3 = 15
le 7 est le même donc inspire toi du 6
3 x - 15 + 8 x + 2 = 7 x - 9
11 x - 7 x = - 9 + 15 - 2
4 x = 4
x = 1
2 x - 6 - x - 5 = 4
x = 4 + 6 + 5
x = 15
3 x + 3 - 6 x - 6 = 0
- 3 x = - 3 + 6
- 3 x = 3
x = - 1
