Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Appendix A - Equations and Inequalities - Exercises - Page 416: 2

Answer

True

Work Step by Step

Step 1: $5(x-8)=5x-40$ Step 2: $5x-40=5x-40$ Step 3: Subtracting $5x$ from both sides, $5x-5x-40=5x-5x-40$ Step 4: $-40=-40$ Step 5: Adding $40$ to both sides, $-40+40=-40+40$ Step 6: $0=0$ When a true statement such as $0=0$ results, the equation is an identity.
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