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Algebra

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The sum of two numbers is 19, and their difference is 55. What are the two numbers?

Solving systems using elimination

  • Algebra - ,

    x+y = 19
    x-y = 55

    add them
    2x = 74
    x = 37

    in 1st ---> 37+y=19
    y = -18

    the numbers are -18 and 37

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