Answer
$$ \left|\begin{array}{rrr} {-5} & {4} \\ {-1} & {0}\end{array}\right|. $$
Work Step by Step
The $(1,3)$ minor is obtained by crossing out the first row and the third column as follows $$ \left|\begin{array}{rrr} {-5} & {4} \\ {-1} & {0}\end{array}\right|. $$
