Solve for r_4
r_{4}=\frac{b}{456201}
Solve for b
b=456201r_{4}
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b=456201r_{4}
Multiply both sides of the equation by 9.
456201r_{4}=b
Swap sides so that all variable terms are on the left hand side.
\frac{456201r_{4}}{456201}=\frac{b}{456201}
Divide both sides by 456201.
r_{4}=\frac{b}{456201}
Dividing by 456201 undoes the multiplication by 456201.
b=456201r_{4}
Multiply both sides of the equation by 9.
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
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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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