If you have MathType 6.7d or later installed, you can use it to include mathematical expressions and equations in your document.
Click where you want the equation to appear.
Click
in the toolbar, then choose MathType Equation.
Type or paste your equation in the field provided.
See MathType Help for instructions on using the MathType tools.
To save your equation, click the File menu at the top of your screen, choose “Close and Return to Pages,” then click Yes in the window that appears.
The equation appears at the insertion point in your document. To edit the equation, double-click it to open MathType again.