2000017404

Consider the matrices: $$A=\left(\begin{array}{ccc}1& -1& 2\\ 3& 4& 1\\ 0& 1& 0\end{array}\right),B=\left(\begin{array}{ccc}2& 3& -1\\ -2& 1& 1\\ 1& 4& -1\end{array}\right).$$ Find the transpose of the matrix $A+B$.