1.6.99 Fields, Groups, Rings

Condition: in the group \ (s l_ {n} (z) \) to find the system of forming a system consisting of elementary matrices, which generate some of their own subgroup containing this matrix. \ [\ Left (\ Begin {Array} {CCC} 2 & -1 &1 \\ -3 & 3 & -5 \\ -1 & 1 & 0 \ END {Array} \ RIIT) \] \]