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Solve for x: 3(x + 2) = 21

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Question: Solve for x: 3(x + 2) = 21

Options:

  1. x = 5
  2. x = 7
  3. x = 3
  4. x = 4

Correct Answer: x = 7

Solution: 

Divide by 3: x + 2 = 7. Subtract 2: x = 5.

Solve for x: 3(x + 2) = 21

Practice Questions

Q1
Solve for x: 3(x + 2) = 21
  1. x = 5
  2. x = 7
  3. x = 3
  4. x = 4

Questions & Step-by-Step Solutions

Solve for x: 3(x + 2) = 21
  • Step 1: Start with the equation 3(x + 2) = 21.
  • Step 2: Divide both sides of the equation by 3 to simplify. This gives you x + 2 = 7.
  • Step 3: Now, subtract 2 from both sides to isolate x. This gives you x = 5.
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