x + 7y = 3x - 2y = 7
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Answer:
x + 7y = 3x-2y = 7
x + 3x = 2y-7y = 7
4x = -5y. = 7
take _5y on the right side
4x+5y=7
9xy=7
xy=7-9
xy= -2
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Answer: Refer to the attachment :)
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