College Math CLEP Prep Practice Exam

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What is the solution of the equation 2x + 4 = 12?

The correct answer is: 8

The equation 2x + 4 = 12 can be solved by isolating the variable x on one side of the equation. By subtracting 4 from both sides, we get 2x = 8. Next, we divide both sides by 2 to isolate x, resulting in the solution x = 4. Option A, 16, is incorrect because if we plug in x = 4 into the original equation, it would not hold true. Option C, 6, is incorrect because it does not satisfy the given equation. Option D, 4, is the value of x and not the solution to the equation, as it still contains the variable. Therefore, option B, 8, is the only correct solution.