You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: A vase can hold 6 flowers . If you had 7 carnations and 47 roses , how many vases would you need to hold the flowers ?

Answer: 9

Question: Joan found 70 seashells on the beach . she gave Sam some of her seashells . She has 27 seashell . How many seashells did she give to Sam ?

Answer: 43

Question: 14 birds were sitting in a tree . 21 more birds flew up to the tree . How many birds were there altogether in the tree ?

Answer:
35