Compare 42/25 and 18/21
1st number: 1 17/25, 2nd number: 18/21
42/25 is greater than 18/21
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
42/25 = 42 × 21/25 × 21 = 882/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
18/21 = 18 × 25/21 × 25 = 450/525 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 882/525 > 450/525 or 42/25 > 18/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25 and 18/21 42/25 and 36/21 42/50 and 18/21 42/25 and 18/42 42/25 and 54/21 42/75 and 18/21 42/25 and 18/63 42/25 and 90/21