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

1. Divide both sides of the equation by 4 to isolate $x$:

$x = \frac{20}{4}$

2. Simplify:

$x = 5$

Thus, the solution is $x = 5$.

Would you like further details or have any questions?

Here are 5 related questions to explore further:

1. What happens if the equation is $20 = 4x + 2$?
2. How would you solve $20 = 4x^2$?
3. What is the inverse operation of multiplying by 4 in equations?
4. How would you solve $3x + 4 = 20$?
5. Can you solve $5x = 100$?

Tip: When solving for a variable, remember to perform the same operation on both sides of the equation to maintain balance.