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Mathematics, 22.06.2019 10:00 coolkid2041

Which of the following would not be the result of a substitution in the following system? 2x + y = 7y - x= 1a. 7 - 2x- x = 1b. 2x + x + 1 = 7c. 2(y + 1) + y = 7​

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Which of the following would not be the result of a substitution in the following system? 2x + y = 7...
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