Simplify ((a^2-81)/(49a+441))÷((a-9)/63)

Math
To divide by a fraction, multiply by its reciprocal.
Simplify the numerator.
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Rewrite as .
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Simplify terms.
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Factor out of .
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Factor out of .
Factor out of .
Factor out of .
Cancel the common factor of .
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Cancel the common factor of .
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Factor out of .
Factor out of .
Cancel the common factor.
Rewrite the expression.
Combine and .
Cancel the common factor of .
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Cancel the common factor.
Rewrite the expression.
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
Mixed Number Form:
Simplify ((a^2-81)/(49a+441))÷((a-9)/63)

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