Discussion on question by SergT2008: Как получить значение имея решение?

Imported from a comment discussion on https://ru.stackoverflow.com/questions/1368315/%d0%9a%d0%b0%d0%ba-%d0%bf%d0%be%d0%bb%d1%83%d1%87%d0%b8%d1%82%d1%8c-%d0%b7%d0%bd%d0%b0%d1%87%d0%b5%d0%bd%d0%b8%d0%b5-%d0%b8%d0%bc%d0%b5%d1%8f-%d1%80%d0%b5%d1%88%d0%b5%d0%bd%d0%b8%d0%b5