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The expression is 6 ladybugs out of 27 insects.

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The ratio is \"\".

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The fraction is \"\"

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\"\"         (Divide numerator and denominator by their GCF 120)

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\"\"              (Cancel common terms)

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The ratio of ladybugs out of insects is 2 to 9. This means for every 2 ladybugs, 9 of them insects are required.