Chapter 1 - Foundations for Algebra - 1-6 Multiplying and Dividing Real Numbers - Practice and Problem-Solving Exercises - Page 43: 52

$−1/6×x×y×z$

We know that we need an expression with x, y, and z in it. To make it simpler, we will multiply the three numbers together. Because $x×y×z$ equals -6 right now, we must multiply -6 by a number to get 1. We know that -6 times -1/6 is 1, so we get the expression: $−1/6×x×y×z.$