What does 4 - (-19) equal?

You have two negatives together; this equals a positive.

So 4 + 19 = 23

23

Step-by-step explanation:

Whenever you subtract a negative number, you treat it as if you're adding a positive number.

For example:

-5 - (-5) becomes - 5+5, which is 0.

So, 4 - (-19) becomes 4+19, which is 23.