Divide by .

Multiply by .

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

Combine and .

Combine the numerators over the common denominator.

Reorder terms.

Rewrite in a factored form.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Apply the distributive property.

Multiply by .

Subtract from .

Subtract from .

Combine exponents.

Factor out negative.

Multiply by .

Move the negative in front of the fraction.

Multiply the numerator by the reciprocal of the denominator.

Move the leading negative in into the numerator.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Move the negative in front of the fraction.

Simplify (9/(1+h)-9/1)/h