Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 1, Equations and Inequalities - 1.4 Rewrite Formuilas and Equations - 1.4 Exercises - Skill Practice - Page 31: 29


$$ z=\frac{x+y}{xy-1}$$

Work Step by Step

In order to solve for z, we must get all of the z terms on one side of the equation and then isolate z. Thus, we find: $$ xyz-z = x+y \\ z(xy-1)=x+y \\ z=\frac{x+y}{xy-1}$$
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