Compare 70/21 and 63/5
1st number: 3 7/21, 2nd number: 12 3/5
70/21 is smaller than 63/5
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
63/5 = 63 × 21/5 × 21 = 1323/105 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 350/105 < 1323/105 or 70/21 < 63/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42 and 63/5 70/21 and 63/10 70/63 and 63/5 70/21 and 63/15 70/21 and 63/25 70/21 and 63/35