Compare 21/6 and 42/80
1st number: 3 3/6, 2nd number: 42/80
21/6 is greater than 42/80
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
21/6 = 21 × 40/6 × 40 = 840/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 840/240 > 126/240 or 21/6 > 42/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6 and 42/80 21/6 and 84/80 21/12 and 42/80 63/6 and 42/80 21/18 and 42/80 21/30 and 42/80 21/42 and 42/80