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10 January, 22:32

3x + 4y = 14 x = 2y - 12 cordanit plane

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  1. 10 January, 22:57
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    ( - 2, 5)

    Step-by-step explanation:

    Given the 2 equations

    3x + 4y = 14 → (1)

    x = 2y - 12 → (2)

    Substitute x = 2y - 12 into (1)

    3 (2y - 12) + 4y = 14 ← distribute and simplify left side

    6y - 36 + 4y = 14

    10y - 36 = 14 (add 36 to both sides)

    10y = 50 (divide both sides by 10)

    y = 5

    Substitute y = 5 into (2) for corresponding value of x

    x = 2 (5) - 12 = 10 - 12 = - 2

    Solution is ( - 2, 5)
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