Solve for x
x=4\left(y-1\right)
Solve for y
y=\frac{x+4}{4}
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x+4=4y
Add 4y to both sides. Anything plus zero gives itself.
x=4y-4
Subtract 4 from both sides.
-4y+4=-x
Subtract x from both sides. Anything subtracted from zero gives its negation.
-4y=-x-4
Subtract 4 from both sides.
\frac{-4y}{-4}=\frac{-x-4}{-4}
Divide both sides by -4.
y=\frac{-x-4}{-4}
Dividing by -4 undoes the multiplication by -4.
y=\frac{x}{4}+1
Divide -x-4 by -4.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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
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Limits
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