Solve for θ
\theta =\frac{r}{4}
Solve for r
r=4\theta
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4\theta =r
Swap sides so that all variable terms are on the left hand side.
\frac{4\theta }{4}=\frac{r}{4}
Divide both sides by 4.
\theta =\frac{r}{4}
Dividing by 4 undoes the multiplication by 4.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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Arithmetic
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Matrix
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Simultaneous equation
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Differentiation
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Integration
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Limits
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