You can also choose Insert > Equation (from the Insert menu at the top of your screen).
Enter an equation in the field using LaTeX commands or MathML elements.
Open a document with an inline equation, then do one of the following:
Edit an equation: Double-click the equation, make your changes, then click Update.
Move an equation within the flow of text: Select the equation and drag it to a new position in the body text, header, footer, or footnote. You can also drag it to another text box or shape.
Change the size, color, or alignment of an equation: Click the equation, then use the controls in the Text tab of the Format Position and align objects in Pages on Mac