It looks like you're referring to an expression $x - 3$. Would you like me to simplify or solve for $x$, or are you looking for some specific operations on this expression?

Let me know how you'd like to proceed! Here are some questions to guide you:

1. Do you want to solve an equation related to $x - 3$?
2. Would you like to explore graphing $x - 3$?
3. Are you working on simplifying algebraic expressions involving $x$?
4. Should this expression be set equal to a value to solve for $x$?
5. Do you need help with factoring expressions like $x^2 - 3x$?

Tip: Always identify whether an algebraic expression needs simplifying or solving for a variable when analyzing equations.