One of 2 things will happen. Enter your equation. This method works in Office 2010 2013 and 2016.
Click the arrow next to the Equation button.
Double-space the lines in a document. You can find the expressions in a mathematical statement by looking at the left-hand side and the right-hand side of the equation using the sign as the point of reference. Do this by clicking on a blank page or anywhere you want your table to appear. If the file is a MathType preference file it will be used to set the new equation preferences.