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3x = 12 −3x+y = −6 The solution to the given system of equations (x,y) is. What is the value of y? −3
Correct answer: B (parsed from the explanation — this source omits an answer key for this item)
Explanation
Choice B is correct. Adding the second equation in the given system to the first 3 + -3 + =12+ -6 equation in the given system yields x ^ x yh ^ h, which is = equivalent to y 6. Choice A is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.
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