Answer:
The required equation is 2b+3=15.
Number of bats = 6
Number of baseballs = 9
Explanation:
Let b be the number of bats.
It is given that there are 3 more baseballs than bats in a dugout.
Number of baseballs = b + 3
Number of bats and baseballs in the dugout in all is



There are 15 bats and baseballs in the dugout in all.

The required equation is 2b+3=15.
Subtract 3 from both sides.


Divide both sides by 2.

The value of b is 6. So, the number of bats is 6 and number of baseballs is 6+3=9.