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Consider the linear system of equations: x+6y +22= -13 12x + 6y 182 6 6r +37y - 12z 80 (a) Write down its augmented

Consider the linear system of equations: x+6y +22= -13 12x + 6y 182 6 6r +37y - 12z 80 (a) Write down its augmented matrix. (b) Solve the linear system by reducing the coefficient matrix to an upper triangular matrix followed by back substitution. (c) Write down each of the elementary matrices E., used in step(b).

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