algebra

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A: 7x+7y=-77
B: 20x-5y=-35

  • algebra -

    First step: divide each equation by the common factors, i.e. first equation by 7, and second equation by 5.

    x + y = 11
    4x- y = -7

    Afterwards, use elimination to solve for x and y.
    Hint: there will be fractions in the answers.

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