algebra

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Solve the following system of equations for the unknown variables.
x + y = 12
x – y = –2
(NOTE: Show answer in the following format (#,#). If not entered in this format, will be scored incorrect.)

  • algebra -

    real simple, just add them

    2x = 10
    so x=5
    plug back into the first: 5+y = 12 ----> y = 7

    check in the 2nd equation.

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