Answer
$\bf{True}$
Work Step by Step
$b=-u$
Now, $a-b=c$
Thus, $a-(-u) =c$
and $a+u=c$
So, the given statement is $\bf{True}$.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 8 - 8.3 - Vectors in the Plane - 8.3 Exercises - Page 588: 106c
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