Google can create equations easily. Use this url: https://www.google.com/chart?cht=tx&chf=bg,s,FFFFFF00&chco=000000&chl=\frac{5}{10}*2x^3y^2

replace the get variable chl with your equation. To create fractions include this: \frac{firstnumber}{secnumber} There’s probably more.

Found by publishing a google doc with an equation in it, and getting the url of the image that contained the equation in the published google doc.