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26 August, 21:44

9x - 7y = - 28

7y - 9x = 28

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  1. 27 August, 00:26
    0
    Substitution or Elimination

    Step-by-step explanation:

    Substitution: x = - 28/9 + 7y/9

    Elimination: x=x, y=4+9x/7
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