Sure! Here's a multiple-choice question designed to test the ability to write and solve a step equation.

Question:

Solve for $x$:

Equation:
$3(x - 4) + 5 = 20$

Choices:

a) $x = 9$
b) $x = 8$
c) $x = 10$
d) $x = 7$

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Steps for solving:

1. Distribute the 3 across the terms inside the parentheses.
2. Combine like terms.
3. Isolate the variable $x$.
4. Solve for $x$.

Let me know if you'd like the solution or further explanations!

Here are some follow-up questions:

1. How do you apply the distributive property in this equation?
2. What happens when you combine like terms?
3. How do you isolate the variable $x$?
4. How can you check your answer once you solve for $x$?
5. Can this equation be solved in a different way, using a different method?

Tip: When solving equations, always check your solution by substituting $x$ back into the original equation to ensure it satisfies the equation!