However, you can also create your own equations. Word’s equation editor can be found in the Symbols group of the Insert tab. Clicking the Equation button in the Symbols group will insert an equation box into your document.
After inserting an equation box (or clicking on an existing equation box), the Equation Tools Design tab will appear on the Ribbon. This tab contains symbols and structures that can be used to create equations. Two commonly used equation structures are the “empty-box” symbols found by clicking the Fraction or Script buttons in the Structures group.
Simple Interest
Compound Interest
Annuity
Amortized Loan Payment