Solve using elimination. 5x + 7y = -6 4x + 7y = -9

Question

Solve using elimination.
5x + 7y = -6
4x + 7y = -9

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MichaelMet 3 years 2021-08-25T08:33:04+00:00 1 Answers 1 views 0

Answers ( )

  1. Maris
    0
    2021-08-25T08:34:10+00:00
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    Answer:

    Simplifying
    5x + 7y = -6

    Solving
    5x + 7y = -6

    Solving for variable ‘x’.

    Move all terms containing x to the left, all other terms to the right.

    Add ‘-7y’ to each side of the equation.
    5x + 7y + -7y = -6 + -7y

    Combine like terms: 7y + -7y = 0
    5x + 0 = -6 + -7y
    5x = -6 + -7y

    Divide each side by ‘5’.
    x = -1.2 + -1.4y

    Simplifying
    x = -1.2 + -1.4y
    __________________________________

    Simplifying
    4x + 7y = -9

    Solving
    4x + 7y = -9

    Solving for variable ‘x’.

    Move all terms containing x to the left, all other terms to the right.

    Add ‘-7y’ to each side of the equation.
    4x + 7y + -7y = -9 + -7y

    Combine like terms: 7y + -7y = 0
    4x + 0 = -9 + -7y
    4x = -9 + -7y

    Divide each side by ‘4’.
    x = -2.25 + -1.75y

    Simplifying
    x = -2.25 + -1.75y

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