Solve for k
k=5
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-2k=k-15
Subtract 8 from -7 to get -15.
-2k-k=-15
Subtract k from both sides.
-3k=-15
Combine -2k and -k to get -3k.
k=\frac{-15}{-3}
Divide both sides by -3.
k=5
Divide -15 by -3 to get 5.
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