Basic College Mathematics (9th Edition)

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

Chapter 9 - Basic Algebra - Summary Exercises - Operations with Signed Numbers: 24

Answer

-20

Work Step by Step

-8 -4 -8 Subtract from left to right = -8 -4 Now change the subtraction to addition change the positive 4 to its opposite (-4) -8 + (-4) = -12 -12 -8 Again change the subtraction to addition change the positive 8 to its opposite (-8) -12 + (-8) = -20
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