Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 Sam et Drew ont un âge combiné de 54 ans. Sam a la moitié de l'âge de Drew. Quel âge a Sam ?


### Response:
 Soit x l'âge de Drew.
Sam a (1/2)x ans.
x + (1/2)x = 54
(3/2)x = 54
3x = 108
x = 108/3 = 36
Sam a 36/2 = 18 ans.