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