Compare 49/42 and 21/45
1st number: 1 7/42, 2nd number: 21/45
49/42 is greater than 21/45
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
49/42 = 49 × 15/42 × 15 = 735/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
21/45 = 21 × 14/45 × 14 = 294/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 735/630 > 294/630 or 49/42 > 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42 and 21/45 49/42 and 42/45 49/84 and 21/45 49/42 and 21/90 49/42 and 63/45