Question

Matthew has 7 basketball cards, 8 baseball cards, and 9 football cards. If Matthew wants to separate the cards into two equal piles, how many cards will be in each pile?

Answer 1

7 + 8 + 9 = 24

24 / 2 = 12

So 12 cards in each pile.

Answer 2

$\dfrac{7+8+9}{2}=\dfrac{24}{2}=\boxed{12}$