Bonsoir
P 1
x
8 x
8 x + 7
P 2
x
x /5
x /5 - 4
P 3
x
11 x
11 x - 3
1 . 8 x + 7 = 23
8 x = 23 - 7 = 16
x = 2
2. x /5 - 4 = 64
x /5 - 20/5 = 320/5
x = 320 + 20 = 340
3. 11 x - 3 = - 36
11 x = - 33
x = - 3
4. 8 x + 7 = 11 x - 3
8 x - 11 x = - 3 - 7
- 3 x = - 10
x = 10/3