Compare 9/36 and 9/21
9/36 is smaller than 9/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
9/36 = 9 × 7/36 × 7 = 63/252 - Likewise, for the 2nd fraction, since 21 × 12 = 252,
9/21 = 9 × 12/21 × 12 = 108/252 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 63/252 < 108/252 or 9/36 < 9/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36 and 9/21 9/36 and 18/21 9/72 and 9/21 9/36 and 9/42 27/36 and 9/21 9/36 and 27/21 9/36 and 9/63 45/36 and 9/21 9/36 and 45/21 63/36 and 9/21 9/36 and 63/21