Compare 15/84 and 21/98, Which fraction is greater?

Compare 15/84 and 21/98

15/84 is smaller than 21/98

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 98 is 588

Next, find the equivalent fraction of both fractional numbers with denominator 588
For the 1st fraction, since 84 × 7 = 588,
15/84 = 15 × 7/84 × 7 = 105/588
Likewise, for the 2nd fraction, since 98 × 6 = 588,
21/98 = 21 × 6/98 × 6 = 126/588
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
105/588 < 126/588 or 15/84 < 21/98

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