It looks like the image shows two parts of a question:

a) $2a - 1$

b) $3$

This seems to be a partially written expression or equation, but it's incomplete. Could you provide more context, like what is asked in relation to these expressions? Are you supposed to simplify, solve, or perform another operation?

Let me know how you'd like to proceed, and I can assist you further.

Here are 5 questions that might expand on this:

1. Are these expressions part of a larger equation?
2. Is there an instruction to solve for $a$?
3. Should these terms be simplified or combined in any way?
4. Are these part of a system of equations or inequalities?
5. Is this part of a factoring or algebraic manipulation problem?

Tip: When solving algebraic equations, always ensure to isolate the variable by applying inverse operations systematically.