Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.4 - Solving Linear Equations - Exercise Set - Page 50: 40



Work Step by Step

Distribute 7 then combine like terms on each side to obtain: $4x +7 = 7x+7-3x \\4x+7 = 4x+7$ Subtract $4x$ on both sides of the equation to obtain: $7=7$ This is a true statement therefore the given equation is an identity.
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