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

### Instruction:
Lisa has 18 more dresses than Ana. If the number of their dresses combined is 48, how many dresses does Ana have?

### Response:
If Lisa's surplus of 18 dresses is taken away from the total number of their dresses, they will have 48-18 = <<48-18=30>>30 dresses in total
They would each have the same number of dresses from these 30 i.e. 30/2 = <<30/2=15>>15 dresses which is the number of dresses that Ana actually has.
#### 15