## Basic College Mathematics (9th Edition)

Published by Pearson

# Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises: 40

.5

#### Work Step by Step

The additive inverse is the opposite of a number. The sum of a number and its additive inverse is 0. Therefore, the additive inverse of -.5 is $-(-.5)=.5$. We can check to make sure the sum of these two numbers is 0. $.5+(-.5)=.5-.5=0$

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