Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Appendix A - A.2 - Formulas and Equations - Exercises - Page 546: 31



Work Step by Step

We can multiply by $n$ assuming that $n\ne 0$ because it's the denominator of a fraction: $360 + 135n = 180n$ We subtract $135n$ from both sides: $ 360 = 180n - 135n = 45n$ We divide by 45: $360\div 45 = 8 = n$
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