Compare 42/21 and 25/72, Which fraction is greater?

Compare 42/21 and 25/72

1^st number: 2 0/21, 2^nd number: 25/72

42/21 is greater than 25/72

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
42/21 = 42 × 24/21 × 24 = 1008/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
25/72 = 25 × 7/72 × 7 = 175/504
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1008/504 > 175/504 or 42/21 > 25/72

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