These are sample practice MCQs created for exam preparation. These are NOT official exam questions.
If 3x + 2y = 16 and x - y = 2, what is the value of x?
Question:
If 3x + 2y = 16 and x - y = 2, what is the value of x?
If 3x + 2y = 16 and x - y = 2, what is the value of x?
Options
Answer: (C) 4
Explanation:
From x - y = 2, we get x = y + 2. Substituting: 3(y + 2) + 2y = 16, so 3y + 6 + 2y = 16, giving 5y = 10, thus y = 2. Therefore x = 2 + 2 = 4.
Explanation:
From x - y = 2, we get x = y + 2. Substituting: 3(y + 2) + 2y = 16, so 3y + 6 + 2y = 16, giving 5y = 10, thus y = 2. Therefore x = 2 + 2 = 4.
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