LaTeX users are. You almost certainly dont have any in the document if youre not familiar with them. Then find Ink Equation button at the left side of the Equation Tools.
When you insert a numbered MathType equation in Word MathType uses Words field codes to insert the number but theres nothing in the field code itself that identifies.
Create your own equation. Write Math Equation 1. On the Insert tab in the Symbols group click the arrow under Equation. Microsoft Word for Windows 2016 2013 2010 or 2007 1.