The title says it all. I've got \cancel working fine in my org-mode Latex export, but org-mode HTML export doesn't know about, render \cancel. Basically I need to strike through something in a math formula, like I'm "canceling out" a factor. Someone suggested MathJax is the problem, i.e., MathJax doesn't know about \cancel.
#+LATEX_HEADER: \usepackage[makeroom]{cancel}
...
\[
\frac{1}{(2^3)(5)} + \frac{1}{3^4} + \frac{1}{\cancel{(2^2)}(23)}
\]
What can a poor org-mode beginner do?
mathjax
is off-topic here