Excluding Clarissa, there are 7 + 10 + 9 = <<7+10+9=26>>26 photos.

Clarissa needs to bring 40 – 26 = <<40-26=14>>14 photos to complete the photo album.

# Answer

14
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
14
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?
train