The expression \(12x - 20x\) can be simplified by combining like terms. Both terms have the variable \(x\), so you can subtract the coefficients:

\[
12x - 20x = (12 - 20)x = -8x
\]

So, the simplified expression is \(-8x\).

Would you like further details or have any questions?

Here are some related questions you might find useful:
1. How do you combine like terms in an algebraic expression?
2. What are the rules for adding and subtracting algebraic terms?
3. Can you provide examples of simplifying other algebraic expressions?
4. What happens if there are constants in the expression along with the variable terms?
5. How do you simplify an expression with more than two terms?
6. What is the next step after simplifying an algebraic expression?
7. How do you factor an expression like the one we simplified?
8. Can you explain the difference between coefficients and constants?

**Tip:** Always look for like terms to combine when simplifying expressions, as this reduces the expression to its simplest form.

Learn how to simplify the algebraic expression 12x - 20x step-by-step. Understand the concept of combining like terms and how to apply it in similar algebraic expressions. Suitable for students in Grades 7-9.

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