Bonjour
x - 5 = 3
x = 3 + 5
x = 8
4x = 9
x = 9/4
- 3x + 8 = 10
- 3x = 10 - 8
- 3x = 2
x = - 2/3
2x - 1 = 7x - 11
2x - 7x = - 11 + 1
- 5x = - 10
x = 10/5
x = 2.
x-5=3
x=3+5
x=7
4x=9
x=4/9
-3x+8=10
-3x=10-8
-3x=2
x=2/-3
2x-1=7x-11
2x-7x=-11+1
-5x=-10
x= -10/-5
x= 10/5
x=2
en espérant avoir pu t'aider ;)
