"- Per the forum rules, we need the original source of the problem (original authorship/copyright"”i.e., not another forum or other secondhand source).
- Please provide the complete text, with all answer choices, of the problem as originally provided.
We can't answer this question unless you tell us what you're doing in the first place! What have you tried? Have you tried any non-algebraic methods (e.g., number plugging)? What do you understand? What don't you understand? Can you pinpoint any specific place/step where you're getting stuck? Etc.