How can I address a being paid less that my male colleagues with similar or lesser roles in my company? is closed as a duplicate of How should I properly approach my boss if I'm feeling underpaid?. The circumstances in the questions are so different as to require different answers.
The newer question is about how to deal with being paid less than you are worth when you believe being a women is effecting her pay. The other question makes no reference to gender. A compete answer to the newer question must address the question of gender discrimination. This is true even if you don’t believe that gender is an issue in this situation because the questioner does believe it.
Finally, a lot of people reacted to the newer question by asserting that gender was not a factor in the question. Closing this question assumes that those people are right and the questioner is wrong. The question shouldn't be closed based on a assumption that the questioner issues of gender discrimination are irrelevant.