Solve for ξ
\xi =\frac{x}{3}
Solve for x
x=3\xi
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3\xi =x
Swap sides so that all variable terms are on the left hand side.
\frac{3\xi }{3}=\frac{x}{3}
Divide both sides by 3.
\xi =\frac{x}{3}
Dividing by 3 undoes the multiplication by 3.
Examples
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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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