<human>:  A boy has 5 cards. His brother has 3 fewer cards than he has. How many cards do they have together?
<bot>: How many cards does his brother have? ** His brother has 5 - 3 = <<5-3=2>>2 cards.
How many cards do they have together? ** Together, they have 5 + 2 = <<5+2=7>>7 cards.
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