Find difference 7 7/8-3 1/4

So first convert to improper fractions

7 and 7/8=7+7/8=56/8+7/8=63/8

3 and 1/4=3+1/4=12/4+1/4=13/4

so nowe we have

63/8+13/4

convert bottom number to same

which is 8

13/4 times 2/2=26/8

now we have

63/8-26/8=37/8=4 and 5/8

answer is 4 and 5/8