Question 1122869
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I just answered similar question today under the link


<A HREF=https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1122833.html>https://www.algebra.com/algebra/homework/equations/Equations.faq.question.1122833.html</A>


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Go to the site  https://matrix.reshish.com/gauss-jordanElimination.php .


Find there free of charge online solver for matrix equations.


Input your extended matrix into the solver.


Then press the "Solve" button.


You will get the solution.