Compare 27/12 and 81/7, Which fraction is greater?

Compare 27/12 and 81/7

1^st number: 2 3/12, 2^nd number: 11 4/7

27/12 is smaller than 81/7

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
27/12 = 27 × 7/12 × 7 = 189/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
81/7 = 81 × 12/7 × 12 = 972/84
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
189/84 < 972/84 or 27/12 < 81/7

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad