Chapter 1 - Foundations for Algebra - 1-5 Adding and Subtracting Real Numbers - Practice and Problem-Solving Exercises - Page 34: 32

$-26$

$-19-7=-26$ When subtracting integers, you can change the subtraction sign to an addition sign and then must also change the second number's sign to a negative. So the question becomes: $-19+(-7)$ which is equal to $-26$.