Solve for k
k=3
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-12=3-5k
Combine -2k and -3k to get -5k.
3-5k=-12
Swap sides so that all variable terms are on the left hand side.
-5k=-12-3
Subtract 3 from both sides.
-5k=-15
Subtract 3 from -12 to get -15.
k=\frac{-15}{-5}
Divide both sides by -5.
k=3
Divide -15 by -5 to get 3.
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