Algebra 1

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

Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Lesson Check - Page 91: 4



Work Step by Step

We are given: $-x-4=9$ Add 4 to both sides: $-x-4+(4)=9+(4)$ $-x=13$ Multiply both sides by -1 to change the negative sign: $-x\times(-1)=13\times(-1)$ $x=-13)$
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