Solve for k
k=\frac{3-x}{2}
Solve for x
x=3-2k
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2k=3-x
Subtract x from both sides.
\frac{2k}{2}=\frac{3-x}{2}
Divide both sides by 2.
k=\frac{3-x}{2}
Dividing by 2 undoes the multiplication by 2.
x=3-2k
Subtract 2k from both sides.
Examples
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Limits
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