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15 May, 22:38

X + 4y - 12 = 0 x = 3y - 7 Which of the following is the resulting equation?

-7y - 19 = 0

y - 5 = 0

7y + 19 = 0

7y - 19 = 0

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Answers (1)
  1. 15 May, 22:56
    0
    The answer to your question is 7y - 19 = 0

    Step-by-step explanation:

    Data

    Equation l x + 4y - 12 = 0

    Equation ll x = 3y - 7

    Process

    1. - Substitute equation ll in equation l

    3y - 7 + 4y - 12 = 0

    2. - Group like terms

    (3y + 4y) + (-7 - 12) = 0

    3. - Simplify like terms

    7y - 19 = 0

    4. - Result

    7y - 19 = 0
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