Let's solve the equation step by step:

\[
3x = 9x - 12
\]

1. Subtract \(9x\) from both sides to bring all terms involving \(x\) to one side:

\[
3x - 9x = -12
\]

2. Simplify the left side:

\[
-6x = -12
\]

3. Divide both sides by \(-6\) to isolate \(x\):

\[
x = \frac{-12}{-6} = 2
\]

The solution is:

\[
x = 2
\]

Would you like further details or have any questions?

Here are 5 related questions for practice:
1. Solve: \( 4x + 5 = 9x - 10 \)
2. Solve: \( 7x - 3 = 2x + 17 \)
3. Solve: \( 12x - 8 = 4x + 20 \)
4. Solve: \( 6x + 15 = 3x + 45 \)
5. Solve: \( 5x - 9 = 2x + 12 \)

**Tip:** Always try to group like terms (those involving \(x\) and constants) on opposite sides to simplify equations quickly.

Learn how to solve the linear equation 3x = 9x - 12 with a clear step-by-step guide. This problem involves fundamental algebra concepts like isolating variables and simplifying expressions, suitable for students in Grades 6-8.

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