4 3/4 + (-3 3/4)

my answer -8 1/4. is it correct?

No.

4 - 3 = 1

To find the sum of 4 3/4 and -3 3/4, you need to add the whole numbers separately and then add the fractions separately.

First, let's add the whole numbers:
4 + (-3) = 1

Next, let's add the fractions:
3/4 + (-3/4) = (3 - 3)/4 = 0/4 = 0

Combining the whole number and the fraction, the sum is 1 + 0 = 1.

Therefore, the correct answer is 1. Your answer of -8 1/4 is incorrect.