Solve for x
x=\frac{k}{2}
Solve for k
k=2x
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-2x=-k
Subtract k from both sides. Anything subtracted from zero gives its negation.
\frac{-2x}{-2}=-\frac{k}{-2}
Divide both sides by -2.
x=-\frac{k}{-2}
Dividing by -2 undoes the multiplication by -2.
x=\frac{k}{2}
Divide -k by -2.
k=2x
Add 2x to both sides. Anything plus zero gives itself.
Examples
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Matrix
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Limits
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