Solve 5x - 15 = 0.

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Multiple Choice

Solve 5x - 15 = 0.

Explanation:
To solve this, you isolate x by undoing the operations around it. Add 15 to both sides to move the constant term: 5x = 15. Then divide by 5 to get x = 3. A quick check shows 5×3 − 15 = 0, so it works. You can also see it by factoring: 5(x − 3) = 0, and since 5 ≠ 0, x − 3 = 0 gives x = 3. Substituting the other values doesn’t satisfy the equation, while x = 3 does.

To solve this, you isolate x by undoing the operations around it. Add 15 to both sides to move the constant term: 5x = 15. Then divide by 5 to get x = 3. A quick check shows 5×3 − 15 = 0, so it works. You can also see it by factoring: 5(x − 3) = 0, and since 5 ≠ 0, x − 3 = 0 gives x = 3. Substituting the other values doesn’t satisfy the equation, while x = 3 does.

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