Algebra 1

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

Chapter 3 - Solving Inequalities - 3-3 Solving Inequalities Using Multiplication or Division - Practice and Problem-Solving Exercises: 44

Answer

18

Work Step by Step

To find the missing term in the first equation, transform the second equation so that the left side is -2a. $a\lt-9\longrightarrow$ multiply both sides by -2; reverse the inequality $a\times-2\gt-9\times-2\longrightarrow$ multiply $-2a\gt18$ The missing term is 18.
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