How-to: write math in blogger

This first blogpost will be special. Obviously because it is the first but also because it will not be about economics. It is, however, about the first problem I needed to solve before starting this blog. Namely, how can you write math equations in blogger? Economics uses quite a bit of math, and not be able to write it would have meant the end of my blog before it ever came into existence. I will mostly provide links to other pages as they do a fine job about explaining what to do.