Compare 50/20 and 80/42, Which fraction is greater?

Compare 50/20 and 80/42

1^st number: 2 10/20, 2^nd number: 1 38/42

50/20 is greater than 80/42

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
50/20 = 50 × 21/20 × 21 = 1050/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
80/42 = 80 × 10/42 × 10 = 800/420
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
1050/420 > 800/420 or 50/20 > 80/42

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad