human
A boy has 5 cards. His brother has 3 fewer cards than he has. How many cards do they have together?
assistant
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.
#### 7