Solve for k
k=-6
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9-7k+10k=-9
Add 10k to both sides.
9+3k=-9
Combine -7k and 10k to get 3k.
3k=-9-9
Subtract 9 from both sides.
3k=-18
Subtract 9 from -9 to get -18.
k=\frac{-18}{3}
Divide both sides by 3.
k=-6
Divide -18 by 3 to get -6.
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