What do you get when you add -15 and -4?

When adding two negative numbers, you combine their magnitudes and keep the negative sign. In this case, you have -15 and -4. To find the sum, you add the absolute values of these numbers: 15 + 4, which equals 19. Since both numbers are negative, the result will also be negative. Therefore, the final result is -19.

This means that when you add -15 and -4, you arrive at -19, confirming that the answer is indeed the correct one.