SAT Math Multiple Choice Practice Question 30: Answer and Explanation
8. Find x if 2(x + 4) = 6
Correct Answer: A
A. As is the case with several math questions on the SAT, the best strategy here is to plug the answer choices into the equation given in the question. Lucky for you, the first answer, Choice (A), works in the equation, so you can stop right there. If you'd rather do algebra to solve this problem, though, start by distributing the 2, to get 2x + 8 = 6. Subtracting 8 from both sides gives you 2x = -2, and x = -1.