Compare 20/21 and 21/32
20/21 is greater than 21/32
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
20/21 = 20 × 32/21 × 32 = 640/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
21/32 = 21 × 21/32 × 21 = 441/672 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 640/672 > 441/672 or 20/21 > 21/32
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/21 and 21/32 20/21 and 42/32 20/42 and 21/32 20/21 and 21/64 60/21 and 21/32 20/21 and 63/32 20/63 and 21/32 20/21 and 21/96