Answer
$k=1/2$
Work Step by Step
Adding $-4-6k$ to both sides,
$7-4=12k-6k$
Simplifying,
$3=6k$
or $k=0.5$
Plugging it back in,
$3+7=6+4$ which is true.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 1, Equations and Inequalities - Chapter Test - Page 65: 14
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