To add matrixes, we have to add the terms in the same column and row. As an example, we have to do it as follows:
Row 1, Column 1:
[tex]-1+7=6[/tex]
Row 1, Column 2:
[tex]6-11=-5[/tex]
Row 2, Column 1:
[tex]-2+(-3)=-5[/tex]
Row 2, Column 2:
[tex]2-1=1[/tex]
Row 3, Column 1:
[tex]4+9=13[/tex]
Row 3, Column 2:
[tex]9+(-3)=6[/tex]
Answer:
