Solve for x (complex solution)
\left\{\begin{matrix}x=\frac{2a}{a-7}\text{, }&a\neq 7\\x\in \mathrm{C}\text{, }&a=-7\end{matrix}\right.
Solve for x
\left\{\begin{matrix}x=\frac{2a}{a-7}\text{, }&a\neq 7\\x\in \mathrm{R}\text{, }&a=-7\end{matrix}\right.
Solve for a
\left\{\begin{matrix}\\a=-7\text{, }&\text{unconditionally}\\a=\frac{7x}{x-2}\text{, }&x\neq 2\end{matrix}\right.
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a^{2}x-2a^{2}-49x=14a
Subtract 49x from both sides.
a^{2}x-49x=14a+2a^{2}
Add 2a^{2} to both sides.
\left(a^{2}-49\right)x=14a+2a^{2}
Combine all terms containing x.
\left(a^{2}-49\right)x=2a^{2}+14a
The equation is in standard form.
\frac{\left(a^{2}-49\right)x}{a^{2}-49}=\frac{2a\left(a+7\right)}{a^{2}-49}
Divide both sides by a^{2}-49.
x=\frac{2a\left(a+7\right)}{a^{2}-49}
Dividing by a^{2}-49 undoes the multiplication by a^{2}-49.
x=\frac{2a}{a-7}
Divide 2a\left(7+a\right) by a^{2}-49.
a^{2}x-2a^{2}-49x=14a
Subtract 49x from both sides.
a^{2}x-49x=14a+2a^{2}
Add 2a^{2} to both sides.
\left(a^{2}-49\right)x=14a+2a^{2}
Combine all terms containing x.
\left(a^{2}-49\right)x=2a^{2}+14a
The equation is in standard form.
\frac{\left(a^{2}-49\right)x}{a^{2}-49}=\frac{2a\left(a+7\right)}{a^{2}-49}
Divide both sides by a^{2}-49.
x=\frac{2a\left(a+7\right)}{a^{2}-49}
Dividing by a^{2}-49 undoes the multiplication by a^{2}-49.
x=\frac{2a}{a-7}
Divide 2a\left(7+a\right) by a^{2}-49.
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