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30 July, 15:50

Systems of equations substitution y=5x-3 - x+7y=-21

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  1. 30 July, 18:40
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    -x+7 (5x-3) = -21

    -x+35x-21=-21

    34x-21=-21

    34x=0

    The answer to find x or y is not possible
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