Some Scientists share 2 baskets of Samples. Each basket has 12 samples. Write an Algebraic expression to represent the situation. Explain how you choose which variable and operations to use.

Hector and alex traded video games. alex gave hector one fourth of his video games in exchange for 6 video games. then he sold 3 video games and gave 2 video games to his brother. alex ended up with 16 video games. how many video games did alex have when he started?