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23 July, 20:42

How do I solve this equation to get the solution?

y = - 2x - 1

-3x + 6y = 24

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Answers (1)
  1. 23 July, 21:02
    0
    There are a few ways to solve this. The method I will use is the substitution method. Since they give us a "y = " statement, we can replace the y in the second equation with what it gives us to the right of the equal sign.

    - 3x + 6 ( - 2x - 1) = 24

    Simplify by using the distributive property.

    - 3x + 6 ( - 2x) + 6 ( - 1) = 24

    - 3x - 12x - 6 = 24.

    Combine like terms

    - 15x - 6 = 24

    Add 6 to each side.

    - 15x = 30

    Divide both sides by - 15 to isolate variable X

    x = 30 / - 15

    x = - 2.

    Now plug in the x-value we've found back into the first equation.

    y = - 2 ( - 2) - 1

    y = 4 - 1

    y = 3

    Your answer is ( - 2, 3)
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