Solve for k
k=-z_{ξ}
Solve for z_ξ
z_{ξ}=-k
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-k=z_{ξ}
Swap sides so that all variable terms are on the left hand side.
\frac{-k}{-1}=\frac{z_{ξ}}{-1}
Divide both sides by -1.
k=\frac{z_{ξ}}{-1}
Dividing by -1 undoes the multiplication by -1.
k=-z_{ξ}
Divide z_{ξ} by -1.
Examples
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Limits
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