Equations worked in Pages, probably as far back as 2007. I don't remember when they first appeared (I've used Pages since the beginning). You just need to install Mathtype. Nothing to figure out. Install and it works. The new equation editor is LaTeX based and IMHO is not as easy to use, but Mathtype still works.
Yeah. That's what I did. It was ugly, clunky, and had a tendency to crash or corrupt my documents.
Edit: Oh, and the price tag was insane.
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