Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 2 - Section 2.2 - Adding Integers - Practice: 18

Answer

$4$ degrees Fahrenheit

Work Step by Step

Adding Two Numbers with Different Signs: Step 1: Find the larger absolute value minus the smaller absolute value Step 2: Use the sign of the number with the larger absolute value as the sign of the sum For three or more numbers, the process is the same. First, we translate the word problem into a mathematical expression: $-7+4+7$ Now use the rules given and solve: $-7+4+7=-3+7=4$
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