bonjour
1. f (x) = 3 x /2 + 5
f ( - 6) = - 6 * 3/2 + 5 = - 18/2 + 5 = - 4
f ( 11) = 11 * 3/2 + 5 = 33/2 + 5 = 33/2 + 10/2 = 43/2 = 21.5
3 x /2 + 5 = 113
3 x /2 + 10/2 = 226/2
3 x = 226 - 10
3 x = 216
x = 72
2. g (x) = - 11 x / 3
g ( 12) = 12 * - 11 /3 = - 132/3 = - 44
- 11 x /3 = 33
- 1 1x = 99
x = - 9