Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.2 Adding and Subtracting Signed Numbers - 9.2 Exercises: 77

Answer

-10

Work Step by Step

According to the last step of order of operations, we must evaluate addition and subtraction from left to right. Therefore, $-2+(-11)-(-3)=-13-(-3)$. Next, change the minus sign to a plus sign and insert the opposite of the second number in place of the second number. $-13-(-3)=-13+(3)=-13+3=-10$
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