Compare 15/70 and 60/90
15/70 is smaller than 60/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
60/90 = 60 × 7/90 × 7 = 420/630 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 135/630 < 420/630 or 15/70 < 60/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70 and 60/90 45/70 and 60/90 75/70 and 60/90