Algebra 1

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

Chapter 2 - Solving Equations - 2-3 Solving Multi-Step Equations - Practice and Problem-Solving Exercises - Page 98: 18



Work Step by Step

We start with the given equation: $-23=-2a-10+a$ We add $10$ to both sides of the equation: $-23+10=-2a+a$ Now, we combine like terms on both sides of the equation: $-13=-a$ Finally, we divide by $-1$ on both sides of the equation: $a=\frac{-13}{-1}=13$
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