Solve for x: 2x - 4 = 8.

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Multiple Choice

Solve for x: 2x - 4 = 8.

Explanation:
Solving a simple linear equation means undoing the operations on x to isolate it. Here, add 4 to both sides to balance the equation, giving 2x = 12. Then divide both sides by 2 to isolate x, so x = 6. A quick check shows it works: substitute x = 6 into 2x - 4, and you get 12 - 4 = 8. The other values don’t satisfy the equation (for example, x = 2 gives 0, x = 4 gives 4, x = 3 gives 2), so x = 6 is the correct solution.

Solving a simple linear equation means undoing the operations on x to isolate it. Here, add 4 to both sides to balance the equation, giving 2x = 12. Then divide both sides by 2 to isolate x, so x = 6. A quick check shows it works: substitute x = 6 into 2x - 4, and you get 12 - 4 = 8. The other values don’t satisfy the equation (for example, x = 2 gives 0, x = 4 gives 4, x = 3 gives 2), so x = 6 is the correct solution.

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