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26 December, 00:42

18x + 8y = - 10

9x - 4y = - 13

elimination method

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Answers (1)
  1. 26 December, 00:52
    0
    9x+4y = - 23

    Step-by-step explanation:

    18x - 9x = 9x

    8y-4y = 4y

    -10-13 = - 23

    put everything back together

    9x+4y = - 23
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