Answer
Fill the blanks with
... $-10$ ... $6$ .
Work Step by Step
See p.613, Equality of Matrices
A matrix of order $m\times n$ has $m$ rows and $n$ columns.
Two matrices are equal
if and only if they have the same order and corresponding elements are equal.
So, x=$-10$ (position: row 1, column 2)
and $y=6$ (position: row 2, column 1)
Fill the blanks with
... $-10$ ... $6$ .
