College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 1 - Section 1.1 - Linear Equations - 1.1 Exercises - Page 85: 33


The equation is an identity.

Work Step by Step

Distribute through the parenthesis. $0.3x+0.6-0.5x-1=-0.2x-0.4$ Add/Subtract like terms. $-0.2x-0.4=-0.2x-0.4$ Add $0.2x$ and $0.4x$ to each side. Because you are left with the equal constants, any value of $x$ will satisfy the given conditions, the fore making the equation an identity. $0=0$
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