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

### Instruction:
 Alex a des nouvelles chemises. Joe a 3 chemises de plus que Alex. Ben a huit chemises de plus que Joe. Si Ben a 15 nouvelles chemises, combien de nouvelles chemises Alex a-t-il ?


### Response:
 Joe a 15-8=<<15-8=7>>7 nouvelles chemises.
Alex a 7-3=<<7-3=4>>4 nouvelles chemises.