Compare 42/48 and 28/21, Which fraction is greater?

Compare 42/48 and 28/21

1^st number: 42/48, 2^nd number: 1 7/21

42/48 is smaller than 28/21

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
28/21 = 28 × 16/21 × 16 = 448/336
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
294/336 < 448/336 or 42/48 < 28/21

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