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1 March, 02:26

2. - 4x + 5y = 1

4x + 4y = 8

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Answers (1)
  1. 1 March, 02:50
    0
    ( - 1, 1)

    Step-by-step explanation:

    Given the 2 equations

    - 4x + 5y = 1 → (1)

    4x + 4y = 8 → (2)

    Adding (1) and (2) term by term will eliminate the term in x

    9y = 9 (divide both sides by 9)

    y = 1

    Substitute y = 1 into either (1) or (2) for corresponding value of x

    Substituting in (1)

    4x + 5 (1) = 1, that is

    4x + 5 = 1 (subtract 5 from both sides)

    4x = - 4 (divide both sides by 4)

    x = - 1

    Solution is ( - 1, 1)
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