Compare 15/21 and 5/70
15/21 is greater than 5/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
15/21 = 15 × 10/21 × 10 = 150/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
5/70 = 5 × 3/70 × 3 = 15/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 150/210 > 15/210 or 15/21 > 5/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/21 and 5/70 15/21 and 10/70 15/42 and 5/70 45/21 and 5/70 15/21 and 15/70 15/63 and 5/70 75/21 and 5/70 15/21 and 25/70 15/21 and 35/70