Compare 42/84 and 6/15
42/84 is greater than 6/15
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
42/84 = 42 × 5/84 × 5 = 210/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
6/15 = 6 × 28/15 × 28 = 168/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 210/420 > 168/420 or 42/84 > 6/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84 and 12/15 42/84 and 6/30 42/84 and 18/15 42/84 and 6/45 42/84 and 30/15 42/84 and 6/75 42/84 and 42/15