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If 9x + 1 = 28, what is x?

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Question: If 9x + 1 = 28, what is x?

Options:

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

Correct Answer: x = 3

Solution: 

Step 1: Subtract 1 from both sides: 9x = 27. Step 2: Divide both sides by 9: x = 3.

If 9x + 1 = 28, what is x?

Practice Questions

Q1
If 9x + 1 = 28, what is x?
  1. x = 2
  2. x = 3
  3. x = 4
  4. x = 5

Questions & Step-by-Step Solutions

If 9x + 1 = 28, what is x?
  • Step 1: Start with the equation 9x + 1 = 28.
  • Step 2: Subtract 1 from both sides of the equation. This gives you 9x = 28 - 1.
  • Step 3: Calculate 28 - 1, which equals 27. Now you have 9x = 27.
  • Step 4: Next, divide both sides of the equation by 9. This means you do 9x / 9 = 27 / 9.
  • Step 5: Simplify the left side to get x, and simplify the right side. You find that x = 3.
  • Algebraic Manipulation – The question tests the ability to manipulate algebraic equations to isolate the variable.
  • Basic Arithmetic Operations – The solution requires performing basic arithmetic operations such as subtraction and division.
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