Compare 84/81 and 15/42
1st number: 1 3/81, 2nd number: 15/42
84/81 is greater than 15/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
84/81 = 84 × 14/81 × 14 = 1176/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
15/42 = 15 × 27/42 × 27 = 405/1134 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1176/1134 > 405/1134 or 84/81 > 15/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/81 and 30/42 84/81 and 15/84 84/81 and 45/42 84/81 and 75/42