Compare 21/15 and 8/90, Which fraction is greater?

Compare 21/15 and 8/90

1^st number: 1 6/15, 2^nd number: 8/90

21/15 is greater than 8/90

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 15 × 6 = 90,
21/15 = 21 × 6/15 × 6 = 126/90
Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
126/90 > 8/90 or 21/15 > 8/90

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