Compare 28/81 and 18/70
28/81 is greater than 18/70
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
28/81 = 28 × 70/81 × 70 = 1960/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
18/70 = 18 × 81/70 × 81 = 1458/5670 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 1960/5670 > 1458/5670 or 28/81 > 18/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81 and 18/70 28/81 and 36/70 84/81 and 18/70 28/81 and 54/70 28/81 and 90/70