Option to Ignore Font Differences

[malcolm-jones]

If I comment out \usepackage{newtxmath} from the following LaTeX to change the math font, then a difference is shown (as pictured). Is it possible to ignore font differences?

\documentclass{article}
\usepackage{newtxmath}
\pagenumbering{gobble}
\begin{document}
The $x$ is just in a different font.
\end{document}

[ssibb]

Hi! Can you please post the two pdf files? I suspect that these are rendered as two distinct characters, not different fonts (font differences are ignored). Thank you!