Solve for x: 3x + 7 = 22.

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Multiple Choice

Solve for x: 3x + 7 = 22.

Explanation:
Solving a linear equation by isolating the variable. Subtract 7 from both sides to remove the constant term: 3x = 15. Then divide both sides by 3 to isolate x: x = 5. Substituting back confirms the solution: 3(5) + 7 = 15 + 7 = 22, which matches the right side. The other values don’t satisfy the equation (for example, 3 gives 16, 8 gives 31, and -5 gives -8), so they aren’t solutions.

Solving a linear equation by isolating the variable. Subtract 7 from both sides to remove the constant term: 3x = 15. Then divide both sides by 3 to isolate x: x = 5. Substituting back confirms the solution: 3(5) + 7 = 15 + 7 = 22, which matches the right side. The other values don’t satisfy the equation (for example, 3 gives 16, 8 gives 31, and -5 gives -8), so they aren’t solutions.

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