Algebra

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Use Cramer's rule to solve the following system of equations. If D=0, use another method to solve the system.

x+y=11
x-y=5

  • Algebra -

    x =
    |11 1|
    |5 -1|
    ------
    |1 1|
    |1 -1|
    = -16/-2 = 8
    y = 11-x = 3

    The | | /| | symbols represent the ratios of two 2x2 determinants

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