Compare 20/63 and 8/21
20/63 is smaller than 8/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
8/21 = 8 × 3/21 × 3 = 24/63 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 20/63 < 24/63 or 20/63 < 8/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/63 and 8/21 20/63 and 16/21 20/63 and 8/42 60/63 and 8/21 20/63 and 24/21 20/63 and 8/63 20/63 and 40/21 20/63 and 56/21