Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - Chapter Review - 1-8 An Introduction to Equations - Page 72: 89



Work Step by Step

Substitute the given value and simplify the equation to determine whether the given value is a solution to the equation. $3(-10)-9\overset?=21\longrightarrow$ multiply $-30-9\overset?=21\longrightarrow$ subtract $-39\ne21$
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