Solve for Q
\left\{\begin{matrix}Q=\frac{\sqrt{x}k+a}{y}\text{, }&y\neq 0\text{ and }x\geq 0\\Q\in \mathrm{R}\text{, }&a=-\sqrt{x}k\text{ and }x\geq 0\text{ and }y=0\end{matrix}\right.
Solve for a
a=Qy-\sqrt{x}k
x\geq 0
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yQ=\sqrt{x}k+a
The equation is in standard form.
\frac{yQ}{y}=\frac{\sqrt{x}k+a}{y}
Divide both sides by y.
Q=\frac{\sqrt{x}k+a}{y}
Dividing by y undoes the multiplication by y.
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