Solution 10418: Converting Mixed Numbers into Improper Fractions on a TI-85 or TI-86 Graphing Calculator.
How are mixed numbers converted into improper fractions on a TI-85 or TI-86 graphing calculator?
The example below will demonstrate how to convert a mixed number into an improper fraction on a TI-85 or TI-86 graphing calculator.
Example: Convert 1 3/5 into an improper
1) Press  [+]  [¸]  on the HOME screen.
2) Press [2nd][MATH].
3) Press [F5] for MISC and [MORE].
4) Now, press [F1] to select >FRAC.
5) Press [ENTER].
The screen will display 8/5.