Changing your answers to fractions using the TI84, TI84 Plus or TI84 Plus Silver Edition requires only three steps to accomplish. You have the option of displaying answers in fraction form from the beginning, or converting answers to fractions after the equation has been solved and given in decimal form  both methods use the same buttons and require the same steps only in a different order.

Type the equation into your TI84 home screen, but do not press "Enter" yet.

Press "MATH" button and select "Frac" by pressing "Enter" or 1.

Press "Enter" again to get the answer in fraction form.
Tips & Warnings
 If you've already pressed "Enter' and received your answer in decimal form, press "Math", "Enter", "Enter" to convert to a fraction.
References
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