To solve the equation \(-3y + 4 = 13\), follow these steps:
- Subtract 4 from both sides of the equation:
\[ -3y + 4 - 4 = 13 - 4 \]
This simplifies to:
\[ -3y = 9 \]
- Now, divide both sides by -3 to solve for \(y\):
\[ y = \frac{9}{-3} \]
This simplifies to:
\[ y = -3 \]
So, the solution is \(y = -3\).