Answer
Substitution
Work Step by Step
If one numerical expression equals a second, then it may replace the second.
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Appendix A - A.1 - Algebraic Expressions - Exercises - Page 540: 1c
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