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If 5x = 15, what is the value of x?

  1. 3

  2. 5

  3. 10

  4. 15

The correct answer is: 3

The equation 5x = 15 can be solved by dividing both sides by 5, giving us x = 3. Option B is incorrect because it is the same value as the given equation. Option C and D are incorrect because they do not match the value of x when we solve for it in the equation.