algebra

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Solve by using the elimination method.

7x-8y=-20
8x+7y=74

  • algebra -

    7x-8y=-20
    8x+7y=74
    Multiply the first equation by 7 and the second equation by 8.

    49x -56y = -140
    64x + 56y = 592
    Now add the last two equations to eliminate y.
    113 x = 452
    X = 4
    Now solve for y.

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