Question 43119
Change the division problem into a multiplication by flipping the second fraction:

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=(m^8/9)(18/m^13)
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Cancel out the exponents by subtraction:
(m^8-8/9)(18/m^13-8)
=(1/9)(18/m^5)

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Continue to cancel out:
(1/1)(2/m^5)
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Multiply straight across:
2/m^5