Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Section 2.3 - Further Solving Linear Equations - Exercise Set: 28

Answer

z = 500

Work Step by Step

0.60(z - 300) + 0.05z = 0.70z - 205 Distribute: 0.60z - 180 + 0.05z = 0.70z - 205 Combine like terms: 0.65z - 180 = 0.70z - 205 Subtract 0.70z from both sides: -0.05z - 180 = -205 Add 180 to both sides: -0.05z = -25 Divide both sides by -0.05: z = 500
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