Hii!
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16/18, 24/27, 32/36, 64/72...
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So four fractions equivalent to 8/9 are 16/18, 24/27, 32/36, 64/72...
We can easily check our work by dividing the numerator and denominator of each fraction by their common factor. If we obtain 8/9 as a result, then our work is correct.
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Hope that this helped! Best wishes.

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