bonjour
programme R
x
4 x
4 x + 7
programme T
x
6 x
6 x + 2
programme S
x
2 x
2 x + 17
R = S
4 x + 7 = 2 x + 17
4 x - 2 x = 17 - 7
2 x = 10
x = 5
R = T
4 x + 7 = 6 x + 2
4 x - 6 x = 2 - 7
- 2 x = - 5
x = 5/2 = 2.5
S = T
2 x + 17 = 6 x + 2
2 x - 6 x = 2 - 17
- 4 x = - 15
x = 15/4