That worked for me. Maybe you should try loading from a previous save and try again.
''They say truth is the first casualty of war. But who defines what's true? Truth is just a matter of perspective. The duty of every soldier is to protect the innocent, and sometimes that means preserving the lie of good and evil, that war isn't just natural selection played out on a grand scale. The only truth I found is that the world we live in is a giant tinderbox. All it takes...is someone to light the match" - Captain Price
Try downloading the specific patch for this problem from the Sith Lords Restoration Project. There is a known issue where if you get it wrong once, it no longer recognises if you get it right (or something like that).
[QUOTE=spenol]I am having an issue with this math equation.
(6_2)_8_9_1=13
I thought that the solution is *, -, +, /. But that isn't working, does anyone know why?[/QUOTE]
Known bug. As all have said, save before doing that & try the answer. If that fails, reload your save & try the alternate answer. For some odd reason it can trigger as a bad answer & after that time it will always do that. Weird quirk in the game, but not the weirdest I have seen yet.
Walter