Finite Math Examples

$[\begin{array}{c} - 12 & - 13 & 15 \\ 16 & 110 & - 82 \\ 7 & - 4 & - 1 \end{array}] [\begin{array}{c} 3 \\ - 66 \\ 6 \end{array}]$

Step 1

Multiply each row in the first matrix by each column in the second matrix.

$[\begin{array}{c} - 12 \cdot 3 - 13 \cdot - 66 + 15 \cdot 6 \\ 16 \cdot 3 + 110 \cdot - 66 - 82 \cdot 6 \\ 7 \cdot 3 - 4 \cdot - 66 - 1 \cdot 6 \end{array}]$

Step 2

Simplify each element of the matrix by multiplying out all the expressions.

$[\begin{array}{c} 912 \\ - 7704 \\ 279 \end{array}]$