15+4y=y

To solve the equation \( 15 + 4y = y \), you can follow these steps:

1. Rearrange the equation to get all terms involving \( y \) on one side:

   \[ 4y - y = -15 \]

2. Simplify the left side:

   \[ 3y = -15 \]

3. Divide both sides by 3:

   \[ y = -5 \]

So, the solution to the equation \( 15 + 4y = y \) is \( y = -5 \).