Solve for x: 3x + 5 = 20.

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Multiple Choice

Solve for x: 3x + 5 = 20.

Explanation:
To solve for x, isolate the variable by undoing the operations on x. Subtract 5 from both sides to get 3x = 15. Then divide both sides by 3 to obtain x = 5. Checking the solution: 3(5) + 5 = 15 + 5 = 20, which matches the right-hand side. The other values don’t satisfy the equation when substituted, so they aren’t correct.

To solve for x, isolate the variable by undoing the operations on x. Subtract 5 from both sides to get 3x = 15. Then divide both sides by 3 to obtain x = 5. Checking the solution: 3(5) + 5 = 15 + 5 = 20, which matches the right-hand side. The other values don’t satisfy the equation when substituted, so they aren’t correct.

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