The answer is 2 2/4. If simplified, it will be 2 1/2
You cannot do 5 1/4 - 2 3/4 and they alread have common denominaters. First you had to subtract 5 by 1 so its 4 know you add 4 to the numerator which is 5. In result the equation would be 4 5/4 - 2 3/4