Video: Evaluating if a Simple Equation or Inequality is True or False

Is the equation 𝑥 + 8 = 11 true or false if 𝑥 = 3?

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Video Transcript

Is the equation 𝑥 plus eight equals 11 true or false if 𝑥 equals three?

We’re given the equation 𝑥 plus eight equals 11. We’re also given the information 𝑥 equals three. We plug in the three value, where the 𝑥 was. Three plus eight equals 11. Does 11 equal 11? Of course.

Now, we can answer the question “is this equation true or false when 𝑥 equals three?” When 𝑥 equals three, the equation 𝑥 plus eight equals 11 is true.

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