A retail associate is processing a customer return. To change the original purchase price $P$ into a refund amount, the associate's software multiplies the price by $-1$. According to the mathematical property of multiplication by $-1$, what is the simplified result of this calculation?

A logistics coordinator uses an inventory spreadsheet to track outgoing shipments. To represent the removal of items from stock, the coordinator multiplies the shipment quantity, $q$, by ${}-1$. According to the mathematical property of multiplication by ${}-1$, the simplified algebraic result of the expression ${}-1q$ is ____.

Match each expression involving the property of multiplication by $-1$ with its simplified result.

Inventory Adjustment Formula

An accounting associate is writing a spreadsheet formula to reverse an overcharge amount, $a$. According to the property of multiplication, multiplying the amount by ${}-1$ yields the reciprocal of that amount.

Reversing Values in Bookkeeping

An office administrator is setting up a billing spreadsheet to process customer refunds. To convert an original purchase charge into a refund or credit, the spreadsheet multiplies the charge by ${}-1$ under the hood. Arrange the following steps in the correct order to represent the sequence of applying this mathematical property to find the simplified algebraic result of the refund.