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题目来源：
OG详解-OG5 数学1 Q11
正确答案：C
题目详解
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Choice C is correct. Dividing all terms in the given equation by 4 yields 4x4−284=−244 , or x-7 = -6. Therefore, the value of x-7 is -6.
Choice A is incorrect. This is the value of 4x-28, not x-7. Choice B is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.
Choice A is incorrect. This is the value of 4x-28, not x-7. Choice B 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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