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19 July, 20:27

4x + y = 6

-5x - y = 21

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Answers (1)
  1. 20 July, 00:19
    0
    Step-by-step explanation:

    Adding equation 1 and 2 we have

    -x=27

    Therefore x = - 27

    Substituting the value of x into equation 2 we have

    -108+y = 6

    y = 114
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