To solve the equation $4x = 20$, follow these steps:

1. Isolate the variable $x$ by dividing both sides of the equation by 4: $\frac{4x}{4} = \frac{20}{4}$

2. Simplifying both sides gives: $x = 5$

So, the solution is $x = 5$.

Would you like further details or have any questions about the solution?

Here are some related questions:

1. How do you solve an equation where the variable is multiplied by a coefficient?
2. What happens if you divide both sides of an equation by a number that is negative?
3. How can you check if $x = 5$ is correct?
4. What would you do if there were additional terms in the equation, like $4x + 2 = 20$?
5. How do you solve an equation with fractions involving variables?

Tip: When solving for a variable, always ensure that you perform the same operation on both sides of the equation to maintain equality.