I have written some mathematical equations using Latex in my blog.

I was wondering if there's a way to make the font size of the equations larger. I went to the WordPress Support page and found that you can increase the font size with the &s parameter, as such:

$latex \LaTeX&s=X$

where X is the number -4 to 4. I can get this example to work, but not for any of my expressions. For example,

$latex x=56 &s=4$ or $latex \x&s=4$

I have no idea how to do this, basically. Any help would be appreciated. Thanks.