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Answer:
y = 1/3w -1/6x
Step-by-step explanation:
Subtract the terms not containing y, then divide by the coefficient of y.
[tex]3y+\dfrac{1}{2}x-w=0\\\\3y=w-\dfrac{1}{2}x\qquad\text{subtract non-$y$ terms}\\\\\boxed{y=\dfrac{1}{3}w-\dfrac{1}{6}x}\qquad\text{multiply by $\dfrac{1}{3}$}[/tex]