Basic Algebra
This is Basic Algebra. The first equation is 3a+2a to do this algebra there is a simple way. What you need to do is add the numbers together as well as the letters. Because of the plus in the middle it means that you add them together. For example 3+2= 5. That will be your first answer then you have an a so you add that next to 5 so it would be 5a.