Well, it's called Central Processing Unit, or CPU.
Answer:
Abstraction refines concepts to their core values, stripping away ideas to the fundamentals of the abstract idea. It leaves the common details of an idea. Abstractions make it easier to understand code because it concentrates on core features/actions and not on the small details.
This is only to be used for studying purposes.
Hope it helps!
Answer:
Your response is correct.
I hope this helped at all.
12g + 9g simplified is 21g