Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Appendix B - Exercise Set - Page 742: 60



Work Step by Step

Use the definition of negative exponents. $7^{-1}+14^{-1}=\frac{1}{7}+\frac{1}{14}=\frac{1\times2}{7\times2}+\frac{1}{14}=\frac{2}{14}+\frac{1}{14}=\frac{3}{14}$
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