It seems like there's a mix of mathematical notation and text in your equation. If "hej" is meant to be a placeholder or an error, I'll assume you meant to ask for the value of $X$ in the equation:

$\frac{X - 5}{4} - 3 = 0$

I'll solve it under this assumption:

1. Add 3 to both sides:

$\frac{X - 5}{4} = 3$

2. Multiply both sides by 4 to eliminate the fraction:

$X - 5 = 12$

3. Add 5 to both sides to solve for $X$:

$X = 17$

So, the solution is $X = 17$.

If "hej" was intentional or if you meant something else, please clarify!

Would you like more details on this solution or have any questions?

Related Questions:

1. How do you solve linear equations with fractions?
2. What are common strategies for isolating variables in equations?
3. How do you handle equations with multiple terms on both sides?
4. What are the steps to solve an equation when the variable appears in the denominator?
5. Can you explain the properties of equality used in solving linear equations?

Tip:

When solving equations, always double-check each step to ensure no arithmetic errors occur.