Solve for x: 5x - 12 = 2x + 9

A x = 3

B x = 7

C x = -3

D x = -7

✓ Correct Answer: Option B

Subtract 2x from both sides to get 3x - 12 = 9. Add 12 to both sides: 3x = 21. Finally, divide by 3: x = 7.

💡 Why is B) the correct answer?

The correct answer to the question "Solve for x: 5x - 12 = 2x + 9" is Option B: x = 7.

The other options — A) x = 3, C) x = -3, D) x = -7 — are incorrect for this GED Exam Prep question. As explained above: Subtract 2x from both sides to get 3x - 12 = 9. Add 12 to both sides: 3x = 21. Finally, divide by 3: x = 7.

📚 About This GED Exam Prep Practice Question

This 2-level GED Exam Prep question from the Mathematical Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GED Exam Prep practice test or use flashcards for spaced repetition review.

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Solve for x: 5x - 12 = 2x + 9

✓ Correct Answer: Option B

📚 About This GED Exam Prep Practice Question

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