Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Appendix A - Basic Algebra Review - A Exercises - Page A-15: 74



Work Step by Step

Step 1: $\frac{4}{5}w+9=-7$ Step 2: Subtract 9 from both sides: $\frac{4}{5}w+9-9=-7-9$. Step 3: $\frac{4}{5}w=-16$ Step 4: Multiply both sides by 5: $\frac{4}{5}w\times5=-16\times5$ . Step 5: $4w=-80$ Step 6: Divide both sides by 4: $\frac{4w}{4}=\frac{-80}{4}$. Step 7: $w=-20$
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