First we set up our problem.
8- 2 3/4
Next, we turn our mixed fraction, 2 3/4, into an improper fraction.
2 3/4= 11/4.
Next, we turn 8 into a fraction.
32/4.
The reason we chose 4 as our denominator was to make it easier to subtract it from 11/4.
Next we subtract our two fractions.
32/4-11/4=21/4.
Finally, we simplify 21/4.
5 1/4.
Our final answer is 5 1/4.
Have a nice day! :)