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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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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