# Finite Math Examples

,

Represent the system of equations in matrix format.

These are both valid notations for the determinant of a matrix.

The determinant of a matrix can be found using the formula .

Simplify the determinant.

Simplify each term.

Multiply by .

Multiply by .

Subtract from .

These are both valid notations for the determinant of a matrix.

The determinant of a matrix can be found using the formula .

Simplify the determinant.

Simplify each term.

Multiply by .

Multiply by .

Add and .

These are both valid notations for the determinant of a matrix.

The determinant of a matrix can be found using the formula .

Simplify the determinant.

Simplify each term.

Multiply by .

Multiply by .

Subtract from .

Remove the parentheses from the numerator.

Simplify .

Move the negative in front of the fraction.

Multiply .

Multiply by .

Multiply by .

Remove the parentheses from the numerator.

Simplify .

Move the negative in front of the fraction.

Multiply .

Multiply by .

Multiply by .

The solution to the system of equations using Cramer's Rule.