Solve for k
k=-2O-4
Solve for O
O=-\frac{k}{2}-2
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-\frac{1}{2}k-2=O
Swap sides so that all variable terms are on the left hand side.
-\frac{1}{2}k=O+2
Add 2 to both sides.
\frac{-\frac{1}{2}k}{-\frac{1}{2}}=\frac{O+2}{-\frac{1}{2}}
Multiply both sides by -2.
k=\frac{O+2}{-\frac{1}{2}}
Dividing by -\frac{1}{2} undoes the multiplication by -\frac{1}{2}.
k=-2O-4
Divide O+2 by -\frac{1}{2} by multiplying O+2 by the reciprocal of -\frac{1}{2}.
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