Compare 6/27 and 7/21
6/27 is smaller than 7/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
6/27 = 6 × 7/27 × 7 = 42/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
7/21 = 7 × 9/21 × 9 = 63/189 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 42/189 < 63/189 or 6/27 < 7/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/27 and 7/21 6/27 and 14/21 6/54 and 7/21 6/27 and 7/42 18/27 and 7/21 6/81 and 7/21 6/27 and 7/63 30/27 and 7/21 6/27 and 35/21 42/27 and 7/21 6/27 and 49/21