Let the metrix A be given by A = ((2,1),...

Let the metrix A be given by A = `((2,1),(3,4))`. Obtain a matrix B such that AB = BA = I where I is the unit matris of order 2. Using this matrix B, solve for x and y from the following equations:
2x + y = 15 and 3x + 4y = 23

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