![\left[\begin{array}{ccc}4&-5\\-2&1\\\end{array}\right]](/tpl/images/0891/0556/347b5.png)
+ 3 ![\left[\begin{array}{ccc}1&-1\\-6&3\\\end{array}\right]](/tpl/images/0891/0556/955c6.png)
![\left[\begin{array}{ccc}8&-10\\-4&2\\\end{array}\right]](/tpl/images/0891/0556/302f1.png)
+ ![\left[\begin{array}{ccc}3&-3\\-18&9\\\end{array}\right]](/tpl/images/0891/0556/03013.png)
![\left[\begin{array}{ccc}8+3&-10-3\\-4-18&2+9\\\end{array}\right]](/tpl/images/0891/0556/855da.png)
![\left[\begin{array}{ccc}11&-13\\-22&11\\\end{array}\right]](/tpl/images/0891/0556/78bdb.png)
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