Algebra 1

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

Chapter 1 - Foundations for Algebra - 1-4 Properties of Real Numbers - Mixed Review - Page 28: 67



Work Step by Step

When we subtract two numbers, it is like adding a negative number. Therefore, $9.7-8.6=9.7+(-8.6)$. We now follow the rules for addition to find the sum. We go 8.6 places to the left on a number line from 9.7 to arrive at $1.1$.
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