Compare 21/70 and 5/84
21/70 is greater than 5/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 126/420 > 25/420 or 21/70 > 5/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70 and 5/84 21/70 and 10/84 63/70 and 5/84 21/70 and 15/84 21/70 and 25/84 21/70 and 35/84