PSAT Math Multiple-Choice Question 711: Answer and Explanation
Question: 711
What is the value of x in the following equation?
- A.
- B.
- C.
- D.
Correct Answer: C
Explanation:
(C) First, distribute the -5:
Now we want to get all of the x-terms on one side and all of the constant terms on the other side. Let's start by adding 5x to both sides:
Now all of the x-terms are on the left, so we want all constant terms on the right. Let's subtract from both sides:
Dividing both sides by 20 will isolate the c:
This simplifies to , which is choice (C).
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