Compare 28/36 and 21/84
28/36 is greater than 21/84
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 196/252 > 63/252 or 28/36 > 21/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/36 and 21/84 28/36 and 42/84 28/72 and 21/84 84/36 and 21/84 28/36 and 63/84