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OpenStudy (cherie_magee):
Which of the following would not be the result of a substitution in the following system? 2x + y = 7 y - x = 1 7 - 2x - x = 1 2x + x + 1 = 7 2(y + 1) + y = 7
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OpenStudy (souvik):
its the 3rd one..because the other can be found substituting x or y
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