Compare 15/70 and 12/42
15/70 is smaller than 12/42
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 45/210 < 60/210 or 15/70 < 12/42
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 12/42 15/70 and 24/42 15/70 and 12/84 45/70 and 12/42 15/70 and 36/42 75/70 and 12/42 15/70 and 60/42 15/70 and 84/42