Use the Row Reduction Method to Find the Inverse of the Given

Essay

Use the row reduction method to find the inverse of the given matrix, if it exists.
​ $A = \left[ \begin{array} { c c c } 1 & 1 & 0 \\- 1 & 1 & 0 \\1 & 0 & 3\end{array} \right]$