Answer:
6 baseball cards.
Step-by-step explanation:
We have been given that Dwight has 3 baseball cards, and Ellis has 9 baseball cards.
First of all, we will find total number of baseball cards by adding 3 to 9.
[tex]\text{Total baseball cards}=3+9[/tex]
[tex]\text{Total baseball cards}=12[/tex]
Since we need to divide baseball cards equally between Dwight and Ellis, so we will divide total number of cards by 2.
[tex]\text{Number of baseball cards each person will have}=\frac{12}{2}[/tex]
[tex]\text{Number of baseball cards each person will have}=6[/tex]
Therefore, Dwight and Ellis will have 6 baseball cards each.
