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If 3x + 4 = 19, what is x?

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Question: If 3x + 4 = 19, what is x?

Options:

  1. x = 3
  2. x = 5
  3. x = 4
  4. x = 6

Correct Answer: x = 5

Solution: 

Subtract 4 from both sides: 3x = 15. Divide by 3: x = 5.

If 3x + 4 = 19, what is x?

Practice Questions

Q1
If 3x + 4 = 19, what is x?
  1. x = 3
  2. x = 5
  3. x = 4
  4. x = 6

Questions & Step-by-Step Solutions

If 3x + 4 = 19, what is x?
  • Step 1: Start with the equation 3x + 4 = 19.
  • Step 2: To isolate the term with x, subtract 4 from both sides of the equation. This gives you 3x = 19 - 4.
  • Step 3: Calculate 19 - 4, which equals 15. Now the equation is 3x = 15.
  • Step 4: To find x, divide both sides of the equation by 3. This gives you x = 15 / 3.
  • Step 5: Calculate 15 divided by 3, which equals 5. So, x = 5.
  • Algebraic Manipulation – The process of rearranging equations to isolate the variable.
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