Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 6 - Systems of Equations and Inequalities - 6-2 Solving Systems Using Substitution - Lesson Check: 10

Answer

False

Work Step by Step

Having a coefficient of 1 or -1 makes it easier to solve the system but is by no means required. We are always allowed to use division to get rid of the coefficient and isolate the variable, allowing us to then do substitution.
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