Geometry: Common Core (15th Edition)

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

Skills Handbook - Solving and Writing Linear Equations - Exercises - Page 894: 4



Work Step by Step

We start with the given equation: $3(n-4)=15$ We apply the distributive property to simplify the left side of the equation: $3n-12=15$ We add $12$ to both sides of the equation: $$3n-12+12=15+12$$$$3n=27$$ We divide by $3$ on each side of the equation: $$\frac{3n}{3}=\frac{27}{3}$$$$n=9$$
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