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If 5(x - 1) = 15, what is x?

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Question: If 5(x - 1) = 15, what is x?

Options:

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

Correct Answer: x = 5

Solution: 

Step 1: Divide both sides by 5: x - 1 = 3. Step 2: Add 1 to both sides: x = 4.

If 5(x - 1) = 15, what is x?

Practice Questions

Q1
If 5(x - 1) = 15, what is x?
  1. x = 2
  2. x = 3
  3. x = 4
  4. x = 5

Questions & Step-by-Step Solutions

If 5(x - 1) = 15, what is x?
  • Step 1: Start with the equation 5(x - 1) = 15.
  • Step 2: Divide both sides of the equation by 5. This gives you x - 1 = 3.
  • Step 3: Now, add 1 to both sides of the equation. This gives you x = 4.
  • Algebraic Manipulation – The question tests the ability to manipulate algebraic equations to isolate the variable.
  • Basic Operations – It involves basic operations such as division and addition to solve for x.
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