How to change the font inside the equation
I would like to change the font type inside the pages's equation?
MacBook, iOS 10.3.2
The LaTeX insertion panel in Pages v6.2 is strictly in math mode, and does not allow changing to another font (e.g. Helvetica), as one could do in the main Pages document body, or in LaTeX proper. You can change to a different style for the default font as outlined in the blahtex/blahtexml guide (direct link to PDF). The usage of these operators is not further documented, and though \mathsf{x = y^2} works, this format does not apply for all in the following list.
If you haven't already, I recommend reviewing Apple's HT202501 article on the LaTeX and MathML support in Pages v6.1 or later.