Let's simplify the expression step by step:

Given:  
\[ 2x + 3x + 6 - 12 \]

1. Combine like terms (the terms involving \( x \)):
\[ 2x + 3x = 5x \]

2. Now, handle the constants (the numbers without \( x \)):
\[ 6 - 12 = -6 \]

3. So the simplified expression is:
\[ 5x - 6 \]

This is the final simplified form of the expression.

Would you like more details or have any questions about this process? Here are 5 related questions to explore further:

1. How do you solve an equation if the expression is equal to something, like \( 5x - 6 = 0 \)?
2. How do you factor expressions like \( 5x - 6 \)?
3. What if the terms have higher powers of \( x \), such as \( x^2 \)?
4. How do you solve for \( x \) when there are fractions in the equation?
5. What happens if we add or subtract more terms with \( x \) in the original expression?

**Tip:** When simplifying expressions, always combine like terms (those with the same variable and exponent) first!

Learn how to simplify the algebraic expression 2x + 3x + 6 - 12 step-by-step. This problem demonstrates the process of combining like terms and simplifying constants, suitable for students in Grades 6-8.

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