Compare 40/6 and 18/21
1st number: 6 4/6, 2nd number: 18/21
40/6 is greater than 18/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
40/6 = 40 × 7/6 × 7 = 280/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 280/42 > 36/42 or 40/6 > 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/6 and 18/21 40/6 and 36/21 40/12 and 18/21 40/6 and 18/42 40/6 and 54/21 40/18 and 18/21 40/6 and 18/63 40/6 and 90/21 40/30 and 18/21 40/42 and 18/21