Compare 90/60 and 72/42
1st number: 1 30/60, 2nd number: 1 30/42
90/60 is smaller than 72/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
72/42 = 72 × 10/42 × 10 = 720/420 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 630/420 < 720/420 or 90/60 < 72/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60 and 72/84