Solve for x (complex solution)
\left\{\begin{matrix}x=\frac{5a}{a+5}\text{, }&a\neq -5\\x\in \mathrm{C}\text{, }&a=5\end{matrix}\right.
Solve for x
\left\{\begin{matrix}x=\frac{5a}{a+5}\text{, }&|a|\neq 5\\x\in \mathrm{R}\text{, }&a=5\end{matrix}\right.
Solve for a
\left\{\begin{matrix}\\a=5\text{, }&\text{unconditionally}\\a=-\frac{5x}{x-5}\text{, }&x\neq 5\end{matrix}\right.
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a^{2}x-5a^{2}=25\left(x-a\right)
Use the distributive property to multiply a^{2} by x-5.
a^{2}x-5a^{2}=25x-25a
Use the distributive property to multiply 25 by x-a.
a^{2}x-5a^{2}-25x=-25a
Subtract 25x from both sides.
a^{2}x-25x=-25a+5a^{2}
Add 5a^{2} to both sides.
\left(a^{2}-25\right)x=-25a+5a^{2}
Combine all terms containing x.
\left(a^{2}-25\right)x=5a^{2}-25a
The equation is in standard form.
\frac{\left(a^{2}-25\right)x}{a^{2}-25}=\frac{5a\left(a-5\right)}{a^{2}-25}
Divide both sides by a^{2}-25.
x=\frac{5a\left(a-5\right)}{a^{2}-25}
Dividing by a^{2}-25 undoes the multiplication by a^{2}-25.
x=\frac{5a}{a+5}
Divide 5a\left(-5+a\right) by a^{2}-25.
a^{2}x-5a^{2}=25\left(x-a\right)
Use the distributive property to multiply a^{2} by x-5.
a^{2}x-5a^{2}=25x-25a
Use the distributive property to multiply 25 by x-a.
a^{2}x-5a^{2}-25x=-25a
Subtract 25x from both sides.
a^{2}x-25x=-25a+5a^{2}
Add 5a^{2} to both sides.
\left(a^{2}-25\right)x=-25a+5a^{2}
Combine all terms containing x.
\left(a^{2}-25\right)x=5a^{2}-25a
The equation is in standard form.
\frac{\left(a^{2}-25\right)x}{a^{2}-25}=\frac{5a\left(a-5\right)}{a^{2}-25}
Divide both sides by a^{2}-25.
x=\frac{5a\left(a-5\right)}{a^{2}-25}
Dividing by a^{2}-25 undoes the multiplication by a^{2}-25.
x=\frac{5a}{a+5}
Divide 5a\left(-5+a\right) by a^{2}-25.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}