Compare 56/84 and 21/16, Which fraction is greater?

Compare 56/84 and 21/16

1^st number: 56/84, 2^nd number: 1 5/16

56/84 is smaller than 21/16

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 84 × 4 = 336,
56/84 = 56 × 4/84 × 4 = 224/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
224/336 < 441/336 or 56/84 < 21/16

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