Answer: The simplified expression is 7p * (-21)
Explanation:
Distribution can be thought of as applying the outside terms to those inside the parenthesis. In this case, we would multiply the 7 by both terms in the expression inside. This leaves us with 7*p and 7*(-3). Combining like terms simplifies the expression into 7p * (-21). Because p is a variable and not a defined term, we do not have to arrive at a purely numerical answer.