PSAT Math Multiple-Choice Question 558: Answer and Explanation
Question: 558
What is the value of y in the system of equations below
16x - 4y = 12
8x + 2y = 4
- A. 2
- B. 3/2
- C. -1/2
- D. -4
Correct Answer: C
Explanation:
(C) Solve this using elimination by taking the first equation and multiplying it by :
Subtract the two so we can easily find y:
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