Compare 42/50 and 5/21
42/50 is greater than 5/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
42/50 = 42 × 21/50 × 21 = 882/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
5/21 = 5 × 50/21 × 50 = 250/1050 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 882/1050 > 250/1050 or 42/50 > 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/50 and 5/21 42/50 and 10/21 42/50 and 5/42 42/50 and 15/21 42/50 and 5/63 42/50 and 25/21 42/50 and 35/21