# Simplify -6/(a^2b^2)+2/(a^4b^6)-8/(a^6b^7) To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Multiply and .
Use the power rule to combine exponents.
Multiply by by adding the exponents.
Move .
Use the power rule to combine exponents.
Combine the numerators over the common denominator.
Factor out of .
Factor out of .
Factor out of .
Factor out of .
To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Multiply and .
Multiply by by adding the exponents.
Move .
Use the power rule to combine exponents.
Multiply by by adding the exponents.
Move .
Multiply by .
Raise to the power of .
Use the power rule to combine exponents.
Combine the numerators over the common denominator.
Simplify the numerator.
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.
Multiply by .
Multiply by by adding the exponents.
Move .
Multiply by .
Raise to the power of .
Use the power rule to combine exponents.
Simplify with factoring out.
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)

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