Solve for s
s=\frac{i}{2u!}
u!\neq 0
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2u!s=i
Swap sides so that all variable terms are on the left hand side.
\frac{2u!s}{2u!}=\frac{i}{2u!}
Divide both sides by 2u!.
s=\frac{i}{2u!}
Dividing by 2u! undoes the multiplication by 2u!.
Examples
Quadratic equation
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Linear equation
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Matrix
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Simultaneous equation
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Limits
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