Using matrix inverses to solve systems of linear equations


Question:

Using Matrix Inverses to Solve Systems of Linear Equations

A) Find the inverse of: |2 1 1|
                                    |0 1 2|
                                    |2 2 1|
b) Use it to solve the following system of equations:

                                    2x1 + x2 + x3 = 4
                                    x2 + 2x3 = 0
                                    2x1 + 2x2 + x3 = 1.

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Algebra: Using matrix inverses to solve systems of linear equations
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