Solve for x
x=2\left(y-3\right)
Solve for y
y=\frac{x+6}{2}
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x+6=2y
Swap sides so that all variable terms are on the left hand side.
x=2y-6
Subtract 6 from both sides.
2y=x+6
The equation is in standard form.
\frac{2y}{2}=\frac{x+6}{2}
Divide both sides by 2.
y=\frac{x+6}{2}
Dividing by 2 undoes the multiplication by 2.
y=\frac{x}{2}+3
Divide x+6 by 2.
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