Compare 21/42 and 5/64
21/42 is greater than 5/64
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
21/42 = 21 × 32/42 × 32 = 672/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
5/64 = 5 × 21/64 × 21 = 105/1344 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 672/1344 > 105/1344 or 21/42 > 5/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42 and 10/64 21/84 and 5/64 63/42 and 5/64 21/42 and 15/64 21/42 and 25/64 21/42 and 35/64