# Solve this: If $A=\left[\begin{array}{ccc}4& -5& -11\\ 1& -3& 1\\ 2& 3& -7\end{array}\right]$ , find A-1. Using A-1, Solve the system of linear equations : 4x - 5y - 11z = 12, x - 3y + z = 1, 2x + 3y - 7z = 2.

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