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algebra

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Solve by the elimination method.

2x-7y=-36
7x+2y=33

  • algebra -

    2x-7y = -36,so
    2x = 7y-36
    x = (7y-36)/2

    plug that into the other equation:

    7*(7y-36)/2 + 2y = 33
    49y - 258 + 4y = 66
    y = 6
    so, x = 3

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