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

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

Multiply and .

Multiply and .

Reorder the factors of .

Combine the numerators over the common denominator.

Apply the distributive property.

Subtract from .

Subtract from .

Move the negative in front of the fraction.

Simplify 1/(x+h)-1/x