Compare 21/18 and 25/64, Which fraction is greater?

Compare 21/18 and 25/64

1^st number: 1 3/18, 2^nd number: 25/64

21/18 is greater than 25/64

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 64 is 576

Next, find the equivalent fraction of both fractional numbers with denominator 576
For the 1st fraction, since 18 × 32 = 576,
21/18 = 21 × 32/18 × 32 = 672/576
Likewise, for the 2nd fraction, since 64 × 9 = 576,
25/64 = 25 × 9/64 × 9 = 225/576
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
672/576 > 225/576 or 21/18 > 25/64

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