#### Answer

$\frac{2}{3}=y$

#### Work Step by Step

We start with the given equation: $4+2y=8y$
We subtract $2y$ from both sides of the equation and combine like terms: $$4+2y-2y=8y-2y$$$$4=6y$$
We divide by $6$ on each side of the equation: $$\frac{4}{6}=\frac{6y}{6}$$$$\frac{2}{3}=y$$