Compare 9/64 and 21/20, Which fraction is greater?

Compare 9/64 and 21/20

1^st number: 9/64, 2^nd number: 1 1/20

9/64 is smaller than 21/20

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 20 is 320

Next, find the equivalent fraction of both fractional numbers with denominator 320
For the 1st fraction, since 64 × 5 = 320,
9/64 = 9 × 5/64 × 5 = 45/320
Likewise, for the 2nd fraction, since 20 × 16 = 320,
21/20 = 21 × 16/20 × 16 = 336/320
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
45/320 < 336/320 or 9/64 < 21/20

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