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

### Instruction:
 Mary has 26 blue shirts and 36 brown shirts. If she gives away half of her blue shirts and a third of her brown shirts, how many shirts does she have left?


### Response:
 Mary gives away 26 / 2 = <<26/2=13>>13 blue shirts.
Mary gives away 36 / 3 = <<36/3=12>>12 brown shirts.
Mary has 26 - 13 = <<26-13=13>>13 blue shirts left.
Mary has 36 - 12 = <<36-12=24>>24 brown shirts left.
Mary has 24 + 13 = <<24+13=37>>37 shirts left.