Well, I am going to answer anyway.
|\(5x-(6-x)\)||Distribute the nagative sign to all terms inside of the parentheses.|
|\(5x-6+x\)||Combine any like terms.|
|\(6x-6\)||That's about all you can do. You can factor out a 6, if you'd like.|
|\(6(x-1)\)||You could also leave it like it was above.|