Answer:
2 1/4
Explanation:
- 5 1/4- [-7 1/2] 
Get a common denominator of 4
- 5 1/4- [-7 1/2*2/2] 
- 5 1/4- [-7 2/4] 
We know subtracting a negative is adding
- 5 1/4 + [7 2/4] 
Rewriting
7 2/4 - 5 1/4
Subtract the whole numbers
7-5 =2
Subtract the fractions
2/4 -1/4 = 1/4
2 1/4