Compare 45/20 and 42/7
1st number: 2 5/20, 2nd number: 6 0/7
45/20 is smaller than 42/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
42/7 = 42 × 20/7 × 20 = 840/140 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 315/140 < 840/140 or 45/20 < 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20 and 42/7 45/20 and 84/7 45/40 and 42/7 45/20 and 42/14 45/60 and 42/7 45/20 and 42/21 45/20 and 42/35 45/20 and 42/49