Build a new equation
- Insert a new equation, select it, and then, under Equation Tools, click the Design tab.
- In the Tools group, click Equation to insert a built-in equation, or click Professional, Linear, or Normal Text to change the format of the equation.

- Build the equation by doing any of the following:
- Use the keyboard to add common alphanumeric characters:
- In the Symbols group, click the More button to browse for special mathematical symbols. Click the down arrow at the top of the gallery to view different sets of characters, such as Greek Letters and Scripts. Click a symbol to insert it in the equation.

- In the Structures group, click a structure type, and then select a structure from the list. After inserting a structure, click each placeholder (the squares with dotted borders), and insert a symbol or alphanumeric character.
To add your equation to the Equation Gallery, in the Tools group, click Equation. At the bottom of the list, click Save Selection to Equation Gallery, enter information about the equation, and then click OK.
The equation feature is integrated into Office Word 2007, so you can quickly add mathematical symbols and structures that blend well with the look of other elements in your document, such as standard text, tables, charts, and graphics.