PSAT Math Multiple-Choice Question 761: Answer and Explanation

Question: 761

What is the value of x in the following equation?
3x + 2 = x

• A.
• B.
• C.
• D.

Correct Answer: A

Explanation:

(A) First, get all x-terms on one side by subtracting 3x from both sides. To combine the x-terms, we'll need a common denominator. So convert 3x to . After combining the x-terms, our equation becomes:

Next, solve for x by dividing both sides by (in other words, multiply both sides by ):

The answer is choice (A).