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Math Help - Did I get the right answer? (Cramer's rule)

  1. #1
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    Did I get the right answer? (Cramer's rule)

    Use Cramer's rule to solve

    x1 + x2 - x3 = 1
    x1 + x2 + x3 = 2
    x1 - x2 = 3

    To skip to the end..

    Unique solutions:

    x1 = 9/4
    x2 = -3/4
    x3 = 1/2

    Are these answers right?
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  2. #2
    Member anonimnystefy's Avatar
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    Re: Did I get the right answer? (Cramer's rule)

    yes,those are right,but next time try substituting the values of x1,x2,x3 (or any other variables) into the first equations to check if the solution you got is correct.
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