Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Skills Handbook - Absolute Value - Exercises - Page 892: 16


$x=24\text{ or }x=-24$

Work Step by Step

We start with the given equation: $|x|-9=15$ First, we must isolate the absolute value term by adding $9$ on both sides: $$|x|+9-9=15+9$$$$|x|=24$$ We must determine all values $x$ that are $24$ units away from $0$ on a number line. We find that both $24$ and $-24$ satisfy this condition. Therefore, $x=24\text{ or }x=-24$
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