Compare 25/42 and 21/7
1st number: 25/42, 2nd number: 3 0/7
25/42 is smaller than 21/7
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
25/42 = 25 × 1/42 × 1 = 25/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
21/7 = 21 × 6/7 × 6 = 126/42 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 25/42 < 126/42 or 25/42 < 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42 and 21/7 25/42 and 42/7 25/84 and 21/7 25/42 and 21/14 75/42 and 21/7 25/42 and 63/7 25/42 and 21/35 25/42 and 21/49