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Solve the given system by reducing the coefficient matrix A into a reduced-row echelon form matrix J. Display the elementary matrices used to obtain J

Solve the given system by reducing the coefficient matrix A into a reduced-row echelon form matrix J. Display the elementary matrices used to obtain J express J in the form

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11. Solve the given system by reducing the coefficient matrix A into a reduced-row echelon form matrix J. Display the elementary matrices used to obtain J and express J in the form J = EIE2...ExA. I 4x1 + X2 - 3X3 = 15 8X1 + 5x2 + 7x3 = -3 = X1 - 2x3 7

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