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

Multiply and .

Use the power rule to combine exponents.

Add and .

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Combine the numerators over the common denominator.

Factor out of .

Factor out of .

Factor out of .

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

Multiply and .

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Multiply by by adding the exponents.

Move .

Multiply by .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Combine the numerators over the common denominator.

Factor out of .

Factor out of .

Factor out of .

Factor out of .

Apply the distributive property.

Multiply by by adding the exponents.

Move .

Use the power rule to combine exponents.

Add and .

Multiply by .

Multiply by by adding the exponents.

Move .

Multiply by .

Raise to the power of .

Use the power rule to combine exponents.

Add and .

Factor out of .

Factor out of .

Factor out of .

Rewrite as .

Factor out of .

Simplify the expression.

Rewrite as .

Move the negative in front of the fraction.

Simplify -6/(a^2b^2)+2/(a^4b^6)-8/(a^6b^7)