$\"\"$

The matrix is $\"\"$ .

Since b₃₁ is the element in row 3, column 1.

Observe the matrix A; it has 3 rows and 3 columns.

Since b₃₁ is the element in row 3, column 1, the value of b₃₁ = $\"\"$ . $\"\"$

The matrix b₃₁ element is $\"\"$ .