Solve for F
\left\{\begin{matrix}F=\frac{K}{x}\text{, }&x\neq 0\\F\in \mathrm{R}\text{, }&K=0\text{ and }x=0\end{matrix}\right.
Solve for K
K=Fx
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-Fx=\frac{\mathrm{d}}{\mathrm{d}t}(x)-K
Subtract K from both sides.
\left(-x\right)F=-K
The equation is in standard form.
\frac{\left(-x\right)F}{-x}=-\frac{K}{-x}
Divide both sides by -x.
F=-\frac{K}{-x}
Dividing by -x undoes the multiplication by -x.
F=\frac{K}{x}
Divide -K by -x.
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