Compare 21/12 and 54/70
1st number: 1 9/12, 2nd number: 54/70
21/12 is greater than 54/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
54/70 = 54 × 6/70 × 6 = 324/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 735/420 > 324/420 or 21/12 > 54/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/12 and 54/70 21/24 and 54/70 63/12 and 54/70 21/36 and 54/70 21/60 and 54/70 21/84 and 54/70