-4-(-28)

To simplify the expression \(-4 - (-28)\), you need to remember that subtracting a negative number is the same as adding a positive number.

So, you can rewrite the expression as:

\(-4 + 28\)

Now, perform the addition:

\(-4 + 28 = 24\)

Thus, \(-4 - (-28) = 24\).