Question
Charlie had 463 pens and Tammy had 399 pens. After Charlie gave Tammy some pens, both of them have the same number of pens. How many pens did Charlie give Tammy?
4 m

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Charlie had 463 pens and Tammy had 399 pens. After Charlie gave Tammy some pens, both of them have the same number of pens. How many pens did Charlie give Tammy?