Our temporary solution for assigning an ID to equations is to place the id on the <p> element or the <span> element surrounding the <math> element.
The attached image represents a model of 4 equations, all with a label. My suggestion for markup of this is to place each <math> element inside its own <span> element. I think this works well since the equations are "standalone" and not part of a calculation.
What should we do if there is a calculation, where more than one equation has a label?
