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

### Instruction:
Cristina, John, Clarissa and Sarah want to give their mother a photo album for her birthday. Cristina brings 7 photos, John brings 10 photos and Sarah brings 9 photos. If the photo album has 40 slots available, how many photos does Clarissa need to bring in order to complete the photo album?

### Response:
 Bila kuhesabu Clarissa, kuna picha 7 + 10 + 9 = <<7+10+9=26>>26.
Clarissa anahitaji kuja na picha 40 - 26 = <<40-26=14>>14 ili kukamilisha albamu ya picha.