# Finite Math Examples

,

Subtract from both sides of the equation.

Replace all occurrences of with the solution found by solving the last equation for . In this case, the value substituted is .

Subtract from .

Move all terms not containing to the right side of the equation.

Subtract from both sides of the equation.

Add and .

Divide each term by and simplify.

Divide each term in by .

Simplify the left side of the by cancelling the common factors.

Reduce the expression by cancelling the common factors.

Factor out of .

Move the negative one from the denominator of .

Simplify the expression.

Multiply by .

Rewrite as .

Divide by .

Replace all occurrences of with the solution found by solving the last equation for . In this case, the value substituted is .

Multiply by .

Add and .

The solution can be shown in both point and equation forms.

Point Form:

Equation Form: