bonjour
3 x - 10 x + 7 = 4 x
- 7 x - 4 x = - 7
- 11 x = - 7
x = 7/11
g (x) = x /3 + 2
x /3 + 2 = 4
x /3 = 12/3 - 6 /3
x = 6
f (x) = 5 x - 12
5 x - 12 = 0
5 x = 12
x = 12/5
