Solve for R
R=4
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8=2R
Cancel out \pi on both sides.
\frac{8}{2}=R
Divide both sides by 2.
4=R
Divide 8 by 2 to get 4.
R=4
Swap sides so that all variable terms are on the left hand side.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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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