Compare 15/84 and 4/20
15/84 is smaller than 4/20
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
15/84 = 15 × 5/84 × 5 = 75/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
4/20 = 4 × 21/20 × 21 = 84/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 75/420 < 84/420 or 15/84 < 4/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84 and 4/20 15/84 and 8/20 15/84 and 4/40 45/84 and 4/20 15/84 and 12/20 15/84 and 4/60 75/84 and 4/20 15/84 and 28/20