Solve for x
x=\frac{-y-4}{5}
Solve for y
y=-5x-4
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-5x=4+y
Add y to both sides.
-5x=y+4
The equation is in standard form.
\frac{-5x}{-5}=\frac{y+4}{-5}
Divide both sides by -5.
x=\frac{y+4}{-5}
Dividing by -5 undoes the multiplication by -5.
x=\frac{-y-4}{5}
Divide 4+y by -5.
-y=4+5x
Add 5x to both sides.
-y=5x+4
The equation is in standard form.
\frac{-y}{-1}=\frac{5x+4}{-1}
Divide both sides by -1.
y=\frac{5x+4}{-1}
Dividing by -1 undoes the multiplication by -1.
y=-5x-4
Divide 4+5x by -1.
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
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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}