Solve for x
x=\frac{y-2}{2}
Solve for y
y=2\left(x+1\right)
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4x=-4+2y
Add 2y to both sides.
4x=2y-4
The equation is in standard form.
\frac{4x}{4}=\frac{2y-4}{4}
Divide both sides by 4.
x=\frac{2y-4}{4}
Dividing by 4 undoes the multiplication by 4.
x=\frac{y}{2}-1
Divide -4+2y by 4.
-2y=-4-4x
Subtract 4x from both sides.
-2y=-4x-4
The equation is in standard form.
\frac{-2y}{-2}=\frac{-4x-4}{-2}
Divide both sides by -2.
y=\frac{-4x-4}{-2}
Dividing by -2 undoes the multiplication by -2.
y=2x+2
Divide -4-4x by -2.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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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
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