Answer
-10
Work Step by Step
We can isolate $k$ by subtracting both sides by 2 and then dividing both sides by -1. We have $12=2-k$ which is $10=-k$ which is $k=-10$.
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 2 - Functions, Equations, and Graphs - Get Ready! - Page 57: 15
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