Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 1 - Section 1.6 - Subtraction of Real Numbers - Exercise Set - Page 73: 116

Answer

Makes sense.

Work Step by Step

All that is new is that you have to know to change the subtraction of a number to addition of its additive opposite. (e.g. subtracting $-5$ means adding $5)$ If you know the rules of addition, the above should not be "too much new to learn". Makes sense.
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