Conquer the College Math Placement Challenge 2026 – Step Up and Shine!

Question: 1 / 400

What is the solution to the equation 3x - 9 = 0?

x = 1

x = 2

x = 3

To solve the equation \(3x - 9 = 0\), the first step is to isolate the variable \(x\). Begin by adding 9 to both sides of the equation:

\[3x - 9 + 9 = 0 + 9\]

This simplifies to:

\[3x = 9\]

Next, to solve for \(x\), divide both sides of the equation by 3:

\[\frac{3x}{3} = \frac{9}{3}\]

This simplifies further to:

\[x = 3\]

Thus, the solution to the equation is \(x = 3\).

This solution indicates that when substituting \(x\) with 3 back into the original equation, it satisfies the equation perfectly:

\[3(3) - 9 = 9 - 9 = 0\]

Verifying the solution is an essential step in confirming that it meets the requirements of the equation, which it does. Therefore, the correct answer is indeed \(x = 3\).

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x = 4

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