Compare 21/27 and 48/80, Which fraction is greater?

Compare 21/27 and 48/80

21/27 is greater than 48/80

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 80 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 27 × 80 = 2160,
21/27 = 21 × 80/27 × 80 = 1680/2160
Likewise, for the 2nd fraction, since 80 × 27 = 2160,
48/80 = 48 × 27/80 × 27 = 1296/2160
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1680/2160 > 1296/2160 or 21/27 > 48/80

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