Compare 12/27 and 21/7
1st number: 12/27, 2nd number: 3 0/7
12/27 is smaller than 21/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
12/27 = 12 × 7/27 × 7 = 84/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
21/7 = 21 × 27/7 × 27 = 567/189 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 84/189 < 567/189 or 12/27 < 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/27 and 21/7 12/27 and 42/7 12/54 and 21/7 12/27 and 21/14 36/27 and 21/7 12/27 and 63/7 12/81 and 21/7 60/27 and 21/7 12/27 and 21/35 84/27 and 21/7 12/27 and 21/49