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Try it!
If you need to use an equation, add or write it in Word.
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Select Insert > Equation or press Alt + =.
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To use a built-in formula, select Design > Equation.
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To create your own, select Insert > Equation > Insert New Equation.
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Use your finger, stylus, or mouse to write your equation.
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Select Insert to bring your equation into the file.
See the ribbon for more Structures and Convert options.