Compute (2103)+(1021)\begin{pmatrix} 2 & 1 \\ 0 & 3 \end{pmatrix} + \begin{pmatrix} 1 & 0 \\ 2 & 1 \end{pmatrix}(2013)+(1201).
(3124)\begin{pmatrix} 3 & 1 \\ 2 & 4 \end{pmatrix}(3214)
(1122)\begin{pmatrix} 1 & 1 \\ 2 & 2 \end{pmatrix}(1212)
(3224)\begin{pmatrix} 3 & 2 \\ 2 & 4 \end{pmatrix}(3224)
(2013)\begin{pmatrix} 2 & 0 \\ 1 & 3 \end{pmatrix}(2103)