Final answer:
To simplify the expression h - 6 + 15 - 7h, combine like terms. The simplified expression is -6h + 9. The Associative Property is used in every step.
Step-by-step explanation:
To simplify the expression h - 6 + 15 - 7h, we can combine like terms. First, combine the h terms: -7h + h = -6h. Then, combine the constant terms: -6 + 15 = 9. Therefore, the simplified expression is -6h + 9.
The property used in every step is the Associative Property. This property allows us to group and regroup terms in any order as long as they are still added or subtracted together.