Solve for y
y=\frac{r+2}{4}
Solve for r
r=4y-2
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4y-2=r
Swap sides so that all variable terms are on the left hand side.
4y=r+2
Add 2 to both sides.
\frac{4y}{4}=\frac{r+2}{4}
Divide both sides by 4.
y=\frac{r+2}{4}
Dividing by 4 undoes the multiplication by 4.
y=\frac{r}{4}+\frac{1}{2}
Divide r+2 by 4.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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