Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3: 93

Answer

$-1$

Work Step by Step

RECALL: $a-(-b)=a+b$ Substitute the given values of the variables to obtain: $-x+y-z = -3+(-4)-(-6)$ Perform the addition (which is the furthest left in the equation) first to obtain: $=-7-(-6)$ Use the rule above to obtain: $=-7+6 \\=-1$
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