Compare 63/70 and 5/21
63/70 is greater than 5/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
63/70 = 63 × 3/70 × 3 = 189/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
5/21 = 5 × 10/21 × 10 = 50/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 189/210 > 50/210 or 63/70 > 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70 and 10/21 63/70 and 5/42 63/70 and 15/21 63/70 and 5/63 63/70 and 25/21 63/70 and 35/21