Geometry: Common Core (15th Edition)

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

Chapter 1 - Tools of Geometry - Chapter Review: 14

Answer

m=15

Work Step by Step

The single hash marks mean the segments are congruent, so the measures are equal. $3m+5=4m-10$ subtract 3m from each side $3m+5-3m=4m-10-3m$ combine like terms $5=m-10$ add 10 to each side $5+10=m-10+10$ simplify $15=m$
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