Compare 27/64 and 21/10, Which fraction is greater?

Compare 27/64 and 21/10

1^st number: 27/64, 2^nd number: 2 1/10

27/64 is smaller than 21/10

Find the least common denominator or LCM of the two denominators:
LCM of 64 and 10 is 320

Next, find the equivalent fraction of both fractional numbers with denominator 320
For the 1st fraction, since 64 × 5 = 320,
27/64 = 27 × 5/64 × 5 = 135/320
Likewise, for the 2nd fraction, since 10 × 32 = 320,
21/10 = 21 × 32/10 × 32 = 672/320
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
135/320 < 672/320 or 27/64 < 21/10

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