Solve for a
\left\{\begin{matrix}a=\frac{i\left(2-fz_{1}\right)}{3r}\text{, }&r\neq 0\\a\in \mathrm{C}\text{, }&f=\frac{2}{z_{1}}\text{ and }z_{1}\neq 0\text{ and }r=0\end{matrix}\right.
Solve for f
\left\{\begin{matrix}f=\frac{3iar+2}{z_{1}}\text{, }&z_{1}\neq 0\\f\in \mathrm{C}\text{, }&a=\frac{2i}{3r}\text{ and }r\neq 0\text{ and }z_{1}=0\end{matrix}\right.
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2+3iar=fz_{1}
Swap sides so that all variable terms are on the left hand side.
3iar=fz_{1}-2
Subtract 2 from both sides.
3ira=fz_{1}-2
The equation is in standard form.
\frac{3ira}{3ir}=\frac{fz_{1}-2}{3ir}
Divide both sides by 3ir.
a=\frac{fz_{1}-2}{3ir}
Dividing by 3ir undoes the multiplication by 3ir.
a=-\frac{i\left(fz_{1}-2\right)}{3r}
Divide fz_{1}-2 by 3ir.
z_{1}f=3iar+2
The equation is in standard form.
\frac{z_{1}f}{z_{1}}=\frac{3iar+2}{z_{1}}
Divide both sides by z_{1}.
f=\frac{3iar+2}{z_{1}}
Dividing by z_{1} undoes the multiplication by z_{1}.
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