Move whole inline math to new line if it is too long

Question

I have big tex document that was created for a4 paper, I wanted to change a4 to a5. After doing so, latex rendered some inline math in kinda awkward way:

Something something x + y + z =
f(x).

I would prefer if instead of breaking on operators and white spaces latex would move whole inline math to the new line

Something something
x + y + z = f(x).

I know I can do that manually with \\ or wrap it some new environment, but it would take SO much time.

I also found this:

\binoppenalty=\maxdimen
\relpenalty=\maxdimen

but it didn't help and made things even worse because sometimes a part of the math would simply go beyond page border.

So, is there a simple and painless way to automatically move inline math to a new line instead of breaking it in awkward places?

MWE:

\documentclass{report}
\begin{document}
Something Something Something Something Something
Something 
$ x + y + z = f(x)$
\end{document}

Answer 1

You can set the penalties to prevent breaks within math then allow the white space outside math more flexibility to avoid overfull boxes

\documentclass{report}
\binoppenalty=10000
\relpenalty=10000
\sloppy
\begin{document}
\noindent X\dotfill X
Something Something Something Something Something
Something 
$ x + y + z = f(x)$
\end{document}

Or, if you want the preceding line to be short, add white space before each math expression that can fill the line

\documentclass{report}
\binoppenalty=10000
\relpenalty=10000
\everymath{\hskip 0pt plus 1fil\penalty50\hskip 0pt plus -1fil }
\begin{document}
\noindent X\dotfill X
Something Something Something Something Something
Something 
$ x + y + z = f(x)$
Something Something Something Something 
$ x + y + z = f(x)$
Something Something
\end{document}