# Precalculus Examples

Step 1

To write as a fraction with a common denominator, multiply by .

Step 2

To write as a fraction with a common denominator, multiply by .

Step 3

Step 3.1

Multiply by .

Step 3.2

Multiply by .

Step 3.3

Multiply by .

Step 3.4

Multiply by .

Step 4

Combine the numerators over the common denominator.

Step 5

Step 5.1

Multiply by .

Step 5.2

Multiply by .

Step 6

Step 6.1

Factor out of .

Step 6.2

Rewrite as .

Step 6.3

Factor out of .

Step 6.4

Simplify the expression.

Step 6.4.1

Rewrite as .

Step 6.4.2

Move the negative in front of the fraction.