Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-4 Solving Equations With Variables on Both Sides - Practice and Problem-Solving Exercises - Page 106: 32


This is an identity.

Work Step by Step

$4-d=-(d-4) \\\\ 4-d=4-d$ We first use the distributive property on both sides of the equation to simplify. This leaves us with the same thing on both sides of the equation, so this is an identity. An identity is an equation that is true for every possible value.
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