x – 5y – z = 1 y – z = 2 x – 5z =1 1. Write the system above in Ax=b form using matrices and find the inverse of coefficient matrix (A-1 2. Then, solve the linear system using A^-1 matrix you obtained in (1) 3. For the first two row operations you used to find A-1 in (1), write corresponding elementary matrices and their inverses (E1 , E2 , E1^-1, E2^-1).

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