This question can be solved by first drawing a model.
First, we want to make Jean & May have the same number of stamps.
Then, we find out how many stamps each have.
88 ÷ 2 = 44
Lastly, we take away the 15 stamps that were given to May at the start.
44 -15 = 29
So, we know that May had 29 stamps at first :)!
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