Alright, let's break it down step by step for you. Imagine Esteban has a box of baseball cards. On Monday, he finds 12 baseball cards. It's like finding 12 shiny treasures! Then, on Tuesday, he adds 24 more baseball cards to his collection. So, if we count all the cards he found together, it's like having 12 + 24 = 36 baseball cards.
Now, Esteban is a generous brother, and he decides to share some of his baseball cards with his sister. After giving some cards to his sister, he realizes he only has 13 baseball cards left. So, we need to figure out how many cards he gave to his sister. Let's do some math!
If we started with 36 baseball cards and he now has 13 left, we can calculate how many cards Esteban gave to his sister by subtracting the cards he has left from the total he started with. So, it's like 36 - 13 = 23 baseball cards that he gave to his sister.
Therefore, Esteban gave 23 baseball cards to his sister. It's just like sharing your favorite toys with your sibling! I hope this explanation helps you understand how we solved the problem step by step. If you have any other questions, feel free to ask!