Answer
$$a=2C-b-c.$$
Work Step by Step
We find $a $ by multiplying both sides by $2$ and then isolating $a$ on one side as follows:
$$C=\frac{1}{2}(a+b+c)\Longrightarrow 2C =a+b+c\\
\Longrightarrow a=2C-b-c.$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 6 - Cumulative Review - Page 265: 27
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