Solve for G
\left\{\begin{matrix}G=-\frac{a\left(f-3\right)}{3c}\text{, }&c\neq 0\text{ and }a\neq 0\\G\in \mathrm{R}\text{, }&f=3\text{ and }c=0\text{ and }a\neq 0\end{matrix}\right.
Solve for a
\left\{\begin{matrix}a=-\frac{3Gc}{f-3}\text{, }&G\neq 0\text{ and }c\neq 0\text{ and }f\neq 3\\a\neq 0\text{, }&\left(c=0\text{ or }G=0\right)\text{ and }f=3\end{matrix}\right.
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2c\times 3G=3f\times 2a-4f\times 2a+2a\times 3
Multiply both sides of the equation by 2a.
6cG=3f\times 2a-4f\times 2a+2a\times 3
Multiply 2 and 3 to get 6.
6cG=6fa-4f\times 2a+2a\times 3
Multiply 3 and 2 to get 6.
6cG=6fa-8fa+2a\times 3
Multiply -4 and 2 to get -8.
6cG=-2fa+2a\times 3
Combine 6fa and -8fa to get -2fa.
6cG=-2fa+6a
Multiply 2 and 3 to get 6.
6cG=6a-2af
The equation is in standard form.
\frac{6cG}{6c}=\frac{6a-2af}{6c}
Divide both sides by 6c.
G=\frac{6a-2af}{6c}
Dividing by 6c undoes the multiplication by 6c.
G=\frac{a\left(3-f\right)}{3c}
Divide 6a-2af by 6c.
2c\times 3G=3f\times 2a-4f\times 2a+2a\times 3
Variable a cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 2a.
6cG=3f\times 2a-4f\times 2a+2a\times 3
Multiply 2 and 3 to get 6.
6cG=6fa-4f\times 2a+2a\times 3
Multiply 3 and 2 to get 6.
6cG=6fa-8fa+2a\times 3
Multiply -4 and 2 to get -8.
6cG=-2fa+2a\times 3
Combine 6fa and -8fa to get -2fa.
6cG=-2fa+6a
Multiply 2 and 3 to get 6.
-2fa+6a=6cG
Swap sides so that all variable terms are on the left hand side.
\left(-2f+6\right)a=6cG
Combine all terms containing a.
\left(6-2f\right)a=6Gc
The equation is in standard form.
\frac{\left(6-2f\right)a}{6-2f}=\frac{6Gc}{6-2f}
Divide both sides by -2f+6.
a=\frac{6Gc}{6-2f}
Dividing by -2f+6 undoes the multiplication by -2f+6.
a=\frac{3Gc}{3-f}
Divide 6cG by -2f+6.
a=\frac{3Gc}{3-f}\text{, }a\neq 0
Variable a cannot be equal to 0.
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Limits
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