Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.2 - Operations with Real Numbers and Simplifying Algebraic Expressions - Concept and Vocabulary Check - Page 26: 5



Work Step by Step

RECALL: $a-(-b)=a+(b)$ Thus, $-16 -(-30) = -16+30$ The numbers being added have different signs. This means that to find their sum, their absolute values will be subtracted. Since 30 has a bigger absolute value than $-16$, we know that the sum will have the same sign as $30$, which is positive. Thus, $-16-(-30)$ will result in a positive number.
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