Solve using Cramer’s rule:
The solution of the system using Cramer’s rule.
If a system of 3 linear equations in the 3 variable is equivalent to the matrix equation , and if , then its solutions are
Here, are the matrices obtained by replacing the 1st, 2nd, and 3rd column of D by the matrix respectively.
The system of equations is equivalent to the matrix equation .
Here, , , and .
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