Compare 8/21 and 28/5, Which fraction is greater?

Compare 8/21 and 28/5

1^st number: 8/21, 2^nd number: 5 3/5

8/21 is smaller than 28/5

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
8/21 = 8 × 5/21 × 5 = 40/105
Likewise, for the 2nd fraction, since 5 × 21 = 105,
28/5 = 28 × 21/5 × 21 = 588/105
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
40/105 < 588/105 or 8/21 < 28/5

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