Question: Solve the system by inverting the coefficient matrix and using the following theorem: If A is an invertible nxn matrix, then for each nx1 matrix

Solve the system by inverting the coefficient matrix and using the following theorem:

If Ais an invertiblenxnmatrix, then for eachnx1 matrixb, the system of equationsAx=b has exactly one solution, namely,x=A-1b.

x1 + x2 = 5

6x1 + 7x2 = 9

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