Compare 5/15 and 10/42
5/15 is greater than 10/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
5/15 = 5 × 14/15 × 14 = 70/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 70/210 > 50/210 or 5/15 > 10/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15 and 10/42 5/15 and 20/42 5/30 and 10/42 5/15 and 10/84 5/15 and 30/42 5/45 and 10/42 25/15 and 10/42 5/15 and 50/42 5/75 and 10/42 35/15 and 10/42 5/15 and 70/42