Solve for f (complex solution)
\left\{\begin{matrix}f=-\frac{y+2}{x}\text{, }&x\neq 0\\f\in \mathrm{C}\text{, }&y=-2\text{ and }x=0\end{matrix}\right.
Solve for x (complex solution)
\left\{\begin{matrix}x=-\frac{y+2}{f}\text{, }&f\neq 0\\x\in \mathrm{C}\text{, }&y=-2\text{ and }f=0\end{matrix}\right.
Solve for f
\left\{\begin{matrix}f=-\frac{y+2}{x}\text{, }&x\neq 0\\f\in \mathrm{R}\text{, }&y=-2\text{ and }x=0\end{matrix}\right.
Solve for x
\left\{\begin{matrix}x=-\frac{y+2}{f}\text{, }&f\neq 0\\x\in \mathrm{R}\text{, }&y=-2\text{ and }f=0\end{matrix}\right.
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\left(-f\right)x-2=y
Swap sides so that all variable terms are on the left hand side.
\left(-f\right)x=y+2
Add 2 to both sides.
-fx=y+2
Reorder the terms.
\left(-x\right)f=y+2
The equation is in standard form.
\frac{\left(-x\right)f}{-x}=\frac{y+2}{-x}
Divide both sides by -x.
f=\frac{y+2}{-x}
Dividing by -x undoes the multiplication by -x.
f=-\frac{y+2}{x}
Divide y+2 by -x.
\left(-f\right)x-2=y
Swap sides so that all variable terms are on the left hand side.
\left(-f\right)x=y+2
Add 2 to both sides.
\frac{\left(-f\right)x}{-f}=\frac{y+2}{-f}
Divide both sides by -f.
x=\frac{y+2}{-f}
Dividing by -f undoes the multiplication by -f.
x=-\frac{y+2}{f}
Divide y+2 by -f.
\left(-f\right)x-2=y
Swap sides so that all variable terms are on the left hand side.
\left(-f\right)x=y+2
Add 2 to both sides.
-fx=y+2
Reorder the terms.
\left(-x\right)f=y+2
The equation is in standard form.
\frac{\left(-x\right)f}{-x}=\frac{y+2}{-x}
Divide both sides by -x.
f=\frac{y+2}{-x}
Dividing by -x undoes the multiplication by -x.
f=-\frac{y+2}{x}
Divide y+2 by -x.
\left(-f\right)x-2=y
Swap sides so that all variable terms are on the left hand side.
\left(-f\right)x=y+2
Add 2 to both sides.
\frac{\left(-f\right)x}{-f}=\frac{y+2}{-f}
Divide both sides by -f.
x=\frac{y+2}{-f}
Dividing by -f undoes the multiplication by -f.
x=-\frac{y+2}{f}
Divide y+2 by -f.
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}