I was wondering given a function like $f(x) = x +5$ that for a given $x$, the value will be the same.
closed as unclear what you're asking by user1337, Jared, O.L., Rick Decker, 40 votes Jul 24 '13 at 0:28
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It is called a fixed point. Your example does not have any, because $x \neq x+5$ for any $x$. But if we had $f(x)=5-x$, we could find that $f(\frac 52)=\frac 52$