The result of adding real numbers is called the sum and the result of subtracting is called the difference. Given any real numbers a, b, and c, we have the following properties of addition: Additive I...The result of adding real numbers is called the sum and the result of subtracting is called the difference. Given any real numbers a, b, and c, we have the following properties of addition: Additive Identity Property, Additive Inverse Property, Associative Property, Commutative Property