Kristin and Isabelle walked through the park and collected a total of 18 pinecones. If 13 pinecones were collected by Kristin, how many pinecones were collected by Isabelle?
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Kristin and Isabelle walked through the park and collected a total of 18 pinecones. If 13 pinecones were collected by Kristin, how many pinecones were collected by Isabelle?